[RGen] Fix failing tests after a PR merge race. (#21864)

Two PRs changed the same test, one update the string, the other one
added new tests. The CI ran but it was not merged with main resulting in
the tests passing in the PR but failing on main

tests/rgen/Microsoft.Macios.Generator.Tests/DataModel/EnumMemberCodeChangesTests.cs

@@ -162,7 +162,7 @@ public IEnumerator<object []> GetEnumerator ()
 				fieldData: new ("x", "libName", EnumValue.None),
 				symbolAvailability: builder.ToImmutable (),
 				attributes: []);
-			yield return [availabilityEnum, "{ Name: 'EnumValue' SymbolAvailability: [{ Platform: iOS Supported: '0.0' Unsupported: [], Obsoleted: [] }] FieldData: { SymbolName: 'x' LibraryName: 'libName', Flags: 'None' } Attributes: [] }"];
+			yield return [availabilityEnum, "{ Name: 'EnumValue' SymbolAvailability: [{ Platform: 'iOS', Supported: '0.0', Unsupported: [], Obsoleted: [] }] FieldData: { SymbolName: 'x' LibraryName: 'libName', Flags: 'None' } Attributes: [] }"];
 
 			var attrsEnum = new EnumMember (
 				name: "EnumValue",
@@ -172,7 +172,7 @@ public IEnumerator<object []> GetEnumerator ()
 					new ("Attribute1"),
 					new ("Attribute2"),
 				]);
-			yield return [attrsEnum, "{ Name: 'EnumValue' SymbolAvailability: [{ Platform: iOS Supported: '0.0' Unsupported: [], Obsoleted: [] }] FieldData: { SymbolName: 'x' LibraryName: 'libName', Flags: 'None' } Attributes: [{ Name: Attribute1, Arguments: [] }, { Name: Attribute2, Arguments: [] }] }"];
+			yield return [attrsEnum, "{ Name: 'EnumValue' SymbolAvailability: [{ Platform: 'iOS', Supported: '0.0', Unsupported: [], Obsoleted: [] }] FieldData: { SymbolName: 'x' LibraryName: 'libName', Flags: 'None' } Attributes: [{ Name: Attribute1, Arguments: [] }, { Name: Attribute2, Arguments: [] }] }"];
 		}
 
 		IEnumerator IEnumerable.GetEnumerator ()