[Xamarin.Android.Build.Tasks] Don't report duplicate type if the mvid…

… is the same.

Fixes dotnet#7473

With the new build system under `dotnet` we can end up with duplicate
assemblies for different `RuntimeIdentifiers`. This can cause the
`GenerateJavaStubs` task to mistakenly report duplicate types.

```
warning XA4214: The managed type `Microsoft.UI.Xaml.Controls.AnimatedIcon` exists in multiple assemblies: Uno.UI, Uno.UI, Uno.UI, Uno.UI. Please refactor the managed type names in these assemblies so that they are not identical. [C:\a\1\s\UnoAppAll\UnoAppAll.Mobile\UnoAppAll.Mobile.csproj::TargetFramework=net6.0-android]
error XA4215: The Java type `crc64a5a37c43dff01024.GridViewHeaderItem` is generated by more than one managed type. Please change the [Register] attribute so that the same Java type is not emitted. [C:\a\1\s\UnoAppAll\UnoAppAll.Mobile\UnoAppAll.Mobile.csproj::TargetFramework=net6.0-android]
```

We should ignore these duplicates is the `mvid` of the the type module is
the same. If it is then they will be from the same assembly.

src/Xamarin.Android.Build.Tasks/Tasks/GenerateJavaStubs.cs

@@ -217,7 +217,6 @@ void Run (DirectoryAssemblyResolver res, bool useMarshalMethods)
 				if ((!useMarshalMethods && !userAssemblies.ContainsKey (td.Module.Assembly.Name.Name)) || JavaTypeScanner.ShouldSkipJavaCallableWrapperGeneration (td, cache)) {
 					continue;
 				}
-
 				javaTypes.Add (td);
 			}
 
@@ -272,6 +271,7 @@ void Run (DirectoryAssemblyResolver res, bool useMarshalMethods)
 
 			using (var acw_map = MemoryStreamPool.Shared.CreateStreamWriter ()) {
 				foreach (TypeDefinition type in javaTypes) {
+					string mvid = type.Module.Mvid.ToString ();
 					string managedKey = type.FullName.Replace ('/', '.');
 					string javaKey = JavaNativeTypeManager.ToJniName (type, cache).Replace ('/', '.');
 
@@ -283,16 +283,20 @@ void Run (DirectoryAssemblyResolver res, bool useMarshalMethods)
 					TypeDefinition conflict;
 					bool hasConflict = false;
 					if (managed.TryGetValue (managedKey, out conflict)) {
-						if (!managedConflicts.TryGetValue (managedKey, out var list))
-							managedConflicts.Add (managedKey, list = new List<string> { conflict.GetPartialAssemblyName (cache) });
-						list.Add (type.GetPartialAssemblyName (cache));
+						if (!conflict.Module.Mvid.Equals(mvid)) {
+							if (!managedConflicts.TryGetValue (managedKey, out var list))
+								managedConflicts.Add (managedKey, list = new List<string> { conflict.GetPartialAssemblyName (cache) });
+							list.Add (type.GetPartialAssemblyName (cache));
+						}
 						hasConflict = true;
 					}
 					if (java.TryGetValue (javaKey, out conflict)) {
-						if (!javaConflicts.TryGetValue (javaKey, out var list))
-							javaConflicts.Add (javaKey, list = new List<string> { conflict.GetAssemblyQualifiedName (cache) });
-						list.Add (type.GetAssemblyQualifiedName (cache));
-						success = false;
+						if (!conflict.Module.Mvid.Equals(mvid)) {
+							if (!javaConflicts.TryGetValue (javaKey, out var list))
+								javaConflicts.Add (javaKey, list = new List<string> { conflict.GetAssemblyQualifiedName (cache) });
+							list.Add (type.GetAssemblyQualifiedName (cache));
+							success = false;
+						}
 						hasConflict = true;
 					}
 					if (!hasConflict) {