Merge pull request #47943 from AlekseyTs/VarianceSafetyForStaticMembers_102

Remove PROTOTYPE comments from tests for variance safety with static members.

src/Compilers/CSharp/Test/Symbol/Symbols/DefaultInterfaceImplementationTests.cs

@@ -59287,7 +59287,7 @@ interface I2<out T1, in T2>
                                                  parseOptions: TestOptions.RegularPreview,
                                                  targetFramework: TargetFramework.NetStandardLatest);
 
-#if false   // PROTOTYPE: enable this branch once https://github.com/dotnet/runtime/issues/39612 is fixed
+#if false   // https://github.com/dotnet/roslyn/issues/46533: enable this branch once https://github.com/dotnet/runtime/issues/39612 is fixed
             CompileAndVerify(compilation1, verify: VerifyOnMonoOrCoreClr, expectedOutput: !ExecutionConditionUtil.IsMonoOrCoreClr ? null :
 @"a
 b").VerifyDiagnostics();
@@ -59333,7 +59333,7 @@ interface I2<out T1, in T2>
                                                  parseOptions: TestOptions.RegularPreview,
                                                  targetFramework: TargetFramework.NetStandardLatest);
 
-#if false   // PROTOTYPE: enable this branch once https://github.com/dotnet/runtime/issues/39612 is fixed
+#if false   // https://github.com/dotnet/roslyn/issues/46533: enable this branch once https://github.com/dotnet/runtime/issues/39612 is fixed
             CompileAndVerify(compilation1, verify: VerifyOnMonoOrCoreClr, expectedOutput: !ExecutionConditionUtil.IsMonoOrCoreClr ? null :
 @"a
 b").VerifyDiagnostics();
@@ -59401,7 +59401,7 @@ static T3 Print<T3>(T3 x)
                                                  parseOptions: TestOptions.RegularPreview,
                                                  targetFramework: TargetFramework.NetStandardLatest);
 
-#if false   // PROTOTYPE: enable this branch once https://github.com/dotnet/runtime/issues/39612 is fixed
+#if false   // https://github.com/dotnet/roslyn/issues/46533: enable this branch once https://github.com/dotnet/runtime/issues/39612 is fixed
             CompileAndVerify(compilation1, verify: VerifyOnMonoOrCoreClr, expectedOutput: !ExecutionConditionUtil.IsMonoOrCoreClr ? null :
 @"a
 b").VerifyDiagnostics();