[release/8.0-preview5] Use fully qualified type names for parameters …

…and don't copy parameter attributes (#86899)

* Use fully qualified type names for parameters and don't copy parameter attributes

The issue dotnet/source-build#3483 looks similar to the issues I found before fixing in #86731. The relevant changes were in ComMethodContext.cs. If it's the same issue I was hitting, the attribute syntax was being copied over without adding 'using' statements or changing the attribute name to be fully qualified. I haven't validated yet, but this should fix it by just not copying the attributes for the parameters since they're not strictly necessary.

* Add test for change

src/libraries/System.Runtime.InteropServices/gen/ComInterfaceGenerator/ComMethodContext.cs

@@ -109,6 +109,7 @@ private MethodDeclarationSyntax CreateUnreachableExceptionStub()
                 .WithAttributeLists(List<AttributeListSyntax>())
                 .WithExplicitInterfaceSpecifier(ExplicitInterfaceSpecifier(
                     ParseName(OriginalDeclaringInterface.Info.Type.FullTypeName)))
+                .WithParameterList(ParameterList(SeparatedList(GenerationContext.SignatureContext.StubParameters)))
                 .WithExpressionBody(ArrowExpressionClause(
                     ThrowExpression(
                         ObjectCreationExpression(

src/libraries/System.Runtime.InteropServices/tests/ComInterfaceGenerator.Unit.Tests/CodeSnippets.cs

@@ -291,6 +291,24 @@ partial interface IComInterface2
             }
             """;
 
+        public string ComInterfaceInheritanceWithParametersWithAttributes => $$"""
+            using System.Runtime.CompilerServices;
+            using System.Runtime.InteropServices;
+            using System.Runtime.InteropServices.Marshalling;
+
+            {{GeneratedComInterface}}
+            partial interface IComInterface
+            {
+                void Method([MarshalUsing(typeof(Utf8StringMarshaller))] string myString);
+            }
+            {{GeneratedComInterface}}
+            partial interface IComInterface1 : IComInterface
+            {
+                void Method2([MarshalUsing(typeof(Utf8StringMarshaller))] string myString);
+            }
+
+            """;
+
         public class ManagedToUnmanaged : IVirtualMethodIndexSignatureProvider
         {
             public MarshalDirection Direction => MarshalDirection.ManagedToUnmanaged;

src/libraries/System.Runtime.InteropServices/tests/ComInterfaceGenerator.Unit.Tests/Compiles.cs

@@ -335,6 +335,7 @@ public static IEnumerable<object[]> ComInterfaceSnippetsToCompile()
             CodeSnippets codeSnippets = new(new GeneratedComInterfaceAttributeProvider());
             yield return new object[] { ID(), codeSnippets.DerivedComInterfaceType };
             yield return new object[] { ID(), codeSnippets.ComInterfaceParameters };
+            yield return new object[] { ID(), codeSnippets.ComInterfaceInheritanceWithParametersWithAttributes };
         }
 
         [Theory]