Fixed reporting for 'MVVMTK0052'

Author: Sergio0694

src/CommunityToolkit.Mvvm.SourceGenerators/Diagnostics/Analyzers/InvalidPartialPropertyLevelObservablePropertyAttributeAnalyzer.cs

@@ -27,7 +27,9 @@ public sealed class InvalidPartialPropertyLevelObservablePropertyAttributeAnalyz
     /// <inheritdoc/>
     public override void Initialize(AnalysisContext context)
     {
-        context.ConfigureGeneratedCodeAnalysis(GeneratedCodeAnalysisFlags.None);
+        // This generator is intentionally also analyzing generated code, because Roslyn will interpret properties
+        // that have '[GeneratedCode]' on them as being generated (and the same will apply to all partial parts).
+        context.ConfigureGeneratedCodeAnalysis(GeneratedCodeAnalysisFlags.Analyze | GeneratedCodeAnalysisFlags.ReportDiagnostics);
         context.EnableConcurrentExecution();
 
         context.RegisterCompilationStartAction(static context =>

tests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn4120.UnitTests/Test_SourceGeneratorsDiagnostics.cs

@@ -889,7 +889,6 @@ public partial string Name
     }
 
     [TestMethod]
-    [Ignore("The symbol callback is not being triggered correctly (see https://github.com/dotnet/roslyn/issues/76166)")]
     public async Task InvalidPartialPropertyLevelObservablePropertyAttributeAnalyzer_OnImplementedProperty_GeneratedByAnotherGenerator_Warns()
     {
         const string source = """
@@ -913,8 +912,7 @@ public partial string Name
             }
             """;
 
-        // This test is having issues, let's invoke the analyzer directly to make it easier to narrow down the problem
-        await CSharpAnalyzerWithLanguageVersionTest<InvalidPartialPropertyLevelObservablePropertyAttributeAnalyzer>.VerifyAnalyzerAsync(source, LanguageVersion.Preview);
+        await VerifyAnalyzerDiagnosticsAndSuccessfulGeneration<InvalidPartialPropertyLevelObservablePropertyAttributeAnalyzer>(source, LanguageVersion.Preview);
     }
 
     [TestMethod]