fix: Native AOT linking

[jpnurmi]

This PR fixes a regression introduced by #4275: the _SentryIsNet8OrGreater helper property was not correctly evaluated when publishing AOT, and Sentry was used as a NuGet package.

The newly introduced integration test creates a minimal AOT app out of the tree in the system temp directory, and tests both PublishAot and also PublishContainer on Linux with Docker available.

Fixes: #4296

[jpnurmi]

Background:

As you might notice from the commit history, I started with trying to make the existing integration test fail but eventually gave up. Since I had a set of commands (#4296 (comment)) I was able to use to reproduce the error locally, I decided to try running those in the CI. First, directly in the workflow for Linux, then as a manual test script for all platforms, and finally, I turned it into a Pester test script.

The second last commit shows what kind of failures the new integration test produces when the properties are not correctly evaluated:

ubuntu-22.04 (linux-x64)

Describing Publish
  Determining projects to restore...
  Restored /tmp/0xsgwocv.qfm/hello-sentry.csproj (in 1.34 sec).
  hello-sentry -> /tmp/0xsgwocv.qfm/bin/Release/net9.0/linux-x64/hello-sentry.dll
  Generating native code
  hello-sentry -> /tmp/0xsgwocv.qfm/bin/Release/net9.0/linux-x64/publish/

Workload updates are available. Run `dotnet workload list` for more information.
  Debug: Logging enabled with ConsoleDiagnosticLogger and min level: Debug
Warning: Sentry option 'Debug' is set to true while Environment is production. Be aware this can cause performance degradation and is not advised. See https://docs.sentry.io/platforms/dotnet/configuration/diagnostic-logger for more information
  Debug: DSN read from options: https://[email protected]/42
  Debug: This looks like a Native AOT application build.
Unhandled exception. System.DllNotFoundException: Unable to load shared library 'sentry-native' or one of its dependencies. In order to help diagnose loading problems, consider using a tool like strace. If you're using glibc, consider setting the LD_DEBUG environment variable: 
sentry-native.so: cannot open shared object file: No such file or directory
libsentry-native.so: cannot open shared object file: No such file or directory
sentry-native: cannot open shared object file: No such file or directory
libsentry-native: cannot open shared object file: No such file or directory

   at System.Runtime.InteropServices.NativeLibrary.LoadLibErrorTracker.Throw(String) + 0x46
   at Internal.Runtime.CompilerHelpers.InteropHelpers.FixupModuleCell(InteropHelpers.ModuleFixupCell*) + 0x139
   at Internal.Runtime.CompilerHelpers.InteropHelpers.ResolvePInvokeSlow(InteropHelpers.MethodFixupCell*) + 0x35
   at Sentry.Native.C.sentry_options_new() + 0x1f
   at Sentry.Native.C.Init(SentryOptions) + 0x22
   at Sentry.SentrySdk.InitNativeSdk(SentryOptions) + 0x2d
   at Sentry.SentrySdk.InitHub(SentryOptions) + 0x1[90](https://github.com/getsentry/sentry-dotnet/actions/runs/15779751203/job/44482314804#step:24:94)
   at Sentry.SentrySdk.Init(Action`1) + 0x3a
   at Program.<Main>$(String[] args) + 0x51
Error: [-] Aot 28.16s (28.13s|29ms)
Message
  Determining projects to restore...
  All projects are up-to-date for restore.
  hello-sentry -> /tmp/0xsgwocv.qfm/bin/Release/net9.0/linux-x64/hello-sentry.dll
  hello-sentry -> /tmp/0xsgwocv.qfm/bin/Release/net9.0/linux-x64/publish/
  Building image 'hello-sentry' with tags 'latest' on top of base image 'mcr.microsoft.com/dotnet/nightly/runtime-deps:9.0-noble-chiseled-aot'.
  Pushed image 'hello-sentry:latest' to local registry via 'docker'.

Workload updates are available. Run `dotnet workload list` for more information.
  Debug: Logging enabled with ConsoleDiagnosticLogger and min level: Debug
Warning: Sentry option 'Debug' is set to true while Environment is production. Be aware this can cause performance degradation and is not advised. See https://docs.sentry.io/platforms/dotnet/configuration/diagnostic-logger for more information
  Debug: DSN read from options: https://[email protected]/42
  Debug: This looks like a Native AOT application build.
Unhandled exception. System.DllNotFoundException: Unable to load shared library 'sentry-native' or one of its dependencies. In order to help diagnose loading problems, consider using a tool like strace. If you're using glibc, consider setting the LD_DEBUG environment variable: 
sentry-native.so: cannot open shared object file: No such file or directory
libsentry-native.so: cannot open shared object file: No such file or directory
sentry-native: cannot open shared object file: No such file or directory
libsentry-native: cannot open shared object file: No such file or directory

   at System.Runtime.InteropServices.NativeLibrary.LoadLibErrorTracker.Throw(String) + 0x46
   at Internal.Runtime.CompilerHelpers.InteropHelpers.FixupModuleCell(InteropHelpers.ModuleFixupCell*) + 0x139
   at Internal.Runtime.CompilerHelpers.InteropHelpers.ResolvePInvokeSlow(InteropHelpers.MethodFixupCell*) + 0x35
   at Sentry.Native.C.sentry_options_new() + 0x1f
   at Sentry.Native.C.Init(SentryOptions) + 0x22
   at Sentry.SentrySdk.InitNativeSdk(SentryOptions) + 0x2d
   at Sentry.SentrySdk.InitHub(SentryOptions) + 0x190
   at Sentry.SentrySdk.Init(Action`1) + 0x3a
   at Program.<Main>$(String[] args) + 0x51
Error: [-] Container 10.33s (10.33s|1ms)

https://github.com/getsentry/sentry-dotnet/actions/runs/15779751203/job/44482314804

windows-latest (win-x64)

Describing Publish
  Determining projects to restore...
  Restored C:\Users\runneradmin\AppData\Local\Temp\s4hlsiu4.2qj\hello-sentry.csproj (in 6.41 sec).
  hello-sentry -> C:\Users\runneradmin\AppData\Local\Temp\s4hlsiu4.2qj\bin\Release\net9.0\win-x64\hello-sentry.dll
  Generating native code
  hello-sentry -> C:\Users\runneradmin\AppData\Local\Temp\s4hlsiu4.2qj\bin\Release\net9.0\win-x64\publish\

Workload updates are available. Run `dotnet workload list` for more information.
  Debug: Logging enabled with ConsoleDiagnosticLogger and min level: Debug
Warning: Sentry option 'Debug' is set to true while Environment is production. Be aware this can cause performance degradation and is not advised. See https://docs.sentry.io/platforms/dotnet/configuration/diagnostic-logger for more information
  Debug: DSN read from options: https://[email protected]/42
  Debug: This looks like a Native AOT application build.
Unhandled exception. System.DllNotFoundException: Unable to load DLL 'sentry-native' or one of its dependencies: The specified module could not be found.
   at System.Runtime.InteropServices.NativeLibrary.LoadLibErrorTracker.Throw(String) + 0x50
   at Internal.Runtime.CompilerHelpers.InteropHelpers.FixupModuleCell(InteropHelpers.ModuleFixupCell*) + 0x10e
   at Internal.Runtime.CompilerHelpers.InteropHelpers.ResolvePInvokeSlow(InteropHelpers.MethodFixupCell*) + 0x2f
   at Sentry.Native.C.sentry_options_new() + 0x24
   at Sentry.Native.C.Init(SentryOptions) + 0x25
   at Sentry.SentrySdk.InitNativeSdk(SentryOptions) + 0x2b
   at Sentry.SentrySdk.InitHub(SentryOptions) + 0x199
   at Sentry.SentrySdk.Init(Action`1) + 0x37
   at Program.<Main>$(String[] args) + 0x4e
Error: [-] Aot 30.33s (30.29s|33ms)
Message
  [!] Container 2ms (0ms|2ms)

https://github.com/getsentry/sentry-dotnet/actions/runs/15779751203/job/44482314808