fix: Fixed handling of mac intents

lib/src/widgets/raw_editor.dart

@@ -1431,7 +1431,14 @@ class RawEditorState extends EditorState
 
   @override
   void performSelector(String selectorName) {
-    // TODO: implement performSelector
+    final intent = intentForMacOSSelector(selectorName);
+
+    if (intent != null) {
+      final primaryContext = primaryFocus?.context;
+      if (primaryContext != null) {
+        Actions.invoke(primaryContext, intent);
+      }
+    }
   }
 }