[xcode13] Fix catalyst intro tests on macOS 12 (#12339)

Move a few macOS special cases into base class so they will apply to
Catalyst too.

tests/introspection/ApiSelectorTest.cs

@@ -835,6 +835,11 @@ namespace Introspection {
 					break;
 				}
 				break;
+			case "NSTask":
+				// category, NSTask won't respond -> @interface NSTask (NSTaskConveniences)
+				if (selectorName == "waitUntilExit")
+					return true;
+				break;
 			}
 
 			// old binding mistake
@@ -1063,6 +1068,10 @@ namespace Introspection {
 			case "initWithDataIgnoringOrientation:":
 				var mi = m as MethodInfo;
 				return mi != null && !mi.IsPublic && mi.ReturnType.Name == "IntPtr";
+			// NSAppleEventDescriptor
+			case "initListDescriptor":
+			case "initRecordDescriptor":
+				return true;
 			default:
 				return false;
 			}

tests/introspection/Mac/MacApiSelectorTest.cs

@@ -155,11 +155,6 @@ namespace Introspection {
 				// compat.
 				return true;
 #endif
-			case "waitUntilExit":
-				// category, NSTask won't respond -> @interface NSTask (NSTaskConveniences)
-				if (type.Name == "NSTask")
-					return true;
-				break;
 			case "readInBackgroundAndNotifyForModes:":
 			case "readInBackgroundAndNotify":
 			case "readToEndOfFileInBackgroundAndNotifyForModes:":
@@ -1283,9 +1278,6 @@ namespace Introspection {
 			// QTMovie
 			case "movieWithTimeRange:error:":
 			case "initWithQuickTimeMedia:error:":
-			// NSAppleEventDescriptor
-			case "initListDescriptor":
-			case "initRecordDescriptor":
 			// NSAnimation
 			case "initWithDuration:animationCurve:":
 				return true;