Update UnbrandedGeneratorVersion to 1.0.0-alpha.20250918.1 (#52708)

* Update UnbrandedGeneratorVersion to 1.0.0-alpha.20250918.1

* regen

---------

Co-authored-by: Ubuntu <cloudtest@8134ce55c00000D.tkkhlgj2u51eln3mcb0lygmbye.dx.internal.cloudapp.net>
Co-authored-by: jolov <[email protected]>

Author: 3 people

eng/Packages.Data.props

@@ -466,7 +466,7 @@
 
   <PropertyGroup>
     <TestProxyVersion>1.0.0-dev.20250805.1</TestProxyVersion>
-    <UnbrandedGeneratorVersion>1.0.0-alpha.20250917.1</UnbrandedGeneratorVersion>
+    <UnbrandedGeneratorVersion>1.0.0-alpha.20250918.1</UnbrandedGeneratorVersion>
     <AzureGeneratorVersion>1.0.0-alpha.20250903.2</AzureGeneratorVersion>
   </PropertyGroup>
 </Project>

eng/http-client-csharp-emitter-package-lock.json

@@ -2,7 +2,7 @@
   "main": "dist/src/index.js",
   "dependencies": {
     "client-plugin": "file:../../../../eng/packages/plugins/client",
-    "@typespec/http-client-csharp": "1.0.0-alpha.20250917.1"
+    "@typespec/http-client-csharp": "1.0.0-alpha.20250918.1"
   },
   "devDependencies": {
     "@azure-tools/typespec-client-generator-core": "0.60.0",

eng/http-client-csharp-emitter-package.json

@@ -80,7 +80,7 @@ private static bool IsCallingBaseCtor(ConstructorProvider constructor)
         protected override FieldProvider? VisitField(FieldProvider field)
         {
             // For ClientOptions, keep the non-public field as this currently represents the latest service version for a client.
-            return field.Modifiers.HasFlag(FieldModifiers.Public) || field.EnclosingType.Implements.Any(i => i.Equals(typeof(ClientOptions)))
+            return field.Modifiers.HasFlag(FieldModifiers.Public) || field.EnclosingType.BaseType?.Equals(typeof(ClientOptions)) == true
                 ? field
                 : null;
         }

eng/packages/http-client-csharp/generator/Azure.Generator.StubLibrary/src/AzureStubVisitor.cs

@@ -38,7 +38,7 @@
     "dist/generator/**"
   ],
   "dependencies": {
-    "@typespec/http-client-csharp": "1.0.0-alpha.20250917.1"
+    "@typespec/http-client-csharp": "1.0.0-alpha.20250918.1"
   },
   "devDependencies": {
     "@azure-tools/azure-http-specs": "0.1.0-alpha.28",