Merge pull request #2544 from cwensley/curtis/mac-no-attach-on-nspanel

Don't attach a dialog when launched from an NSPanel

src/Eto.Mac/Forms/DialogHandler.cs

@@ -137,7 +137,7 @@ bool ShowAttached
 					return false;
 
 				// if the owner can't become main (e.g. NSPanel), show as attached
-				return !owner.CanBecomeMainWindow;
+				return !owner.CanBecomeMainWindow && owner is not NSPanel;
 			}
 		}