Fix build error on flutter dev channel

lib/widgets/raw_editor.dart

@@ -1033,7 +1033,7 @@ class RawEditorState extends EditorState
   }
 
   @override
-  void hideToolbar() {
+  void hideToolbar([bool hideHandles = true]) {
     if (getSelectionOverlay()?.toolbar != null) {
       getSelectionOverlay()?.hideToolbar();
     }
@@ -1135,6 +1135,12 @@ class RawEditorState extends EditorState
       closeConnectionIfNeeded();
     }
   }
+
+  @override
+  void userUpdateTextEditingValue(
+      TextEditingValue value, SelectionChangedCause cause) {
+    updateEditingValue(value);
+  }
 }
 
 class _Editor extends MultiChildRenderObjectWidget {