[wasm][debugger] fixing setting a breakpoint in an invalid IL offset after hotreload

[thaystg]

It's not possible to add a test case because it is a concurrency issue, let me try to explain:

• You apply a change using hot reload;
• The metadata and pdb is already updated on runtime side but not on debugger side;
• We receive a setBreakpoint command from VS, then we find the IL and try to set the breakpoint on runtime side.
• The IL offset doesn't exist on runtime side, it returns an error on set breakpoint and it was throwing an exception.

The fix was to remove the exception throw and check the return of the set breakpoint function.

Fixes #75492

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Tagging subscribers to this area: @thaystg
See info in area-owners.md if you want to be subscribed.

Issue Details

---

It's not possible to add a test case because it is a concurrency issue, let me try to explain:

• You apply a change using hot reload;
• The metadata and pdb is already updated on runtime side but not on debugger side;
• We receive a setBreakpoint command from VS, then we find the IL and try to set the breakpoint on runtime side.
• The IL offset doesn't exist on runtime side, it returns an error on set breakpoint and it was throwing an exception.

The fix was to remove the exception throw and check the return of the set breakpoint function.

Fixes #75492

Author:	thaystg
Assignees:	-
Labels:	area-Debugger-mono
Milestone:	-

[ghost]

Tagging subscribers to 'arch-wasm': @lewing
See info in area-owners.md if you want to be subscribed.

Issue Details

---

It's not possible to add a test case because it is a concurrency issue, let me try to explain:

• You apply a change using hot reload;
• The metadata and pdb is already updated on runtime side but not on debugger side;
• We receive a setBreakpoint command from VS, then we find the IL and try to set the breakpoint on runtime side.
• The IL offset doesn't exist on runtime side, it returns an error on set breakpoint and it was throwing an exception.

The fix was to remove the exception throw and check the return of the set breakpoint function.

Fixes #75492

Author:	thaystg
Assignees:	thaystg
Labels:	arch-wasm, area-Debugger-mono
Milestone:	-

[thaystg]

/backport to release/7.0

[github-actions]

Started backporting to release/7.0: https://github.com/dotnet/runtime/actions/runs/3048571879