fix: rename file before saving

Author: ZebraVogel94349

lib/pages/editor/editor.dart

@@ -831,6 +831,8 @@ class EditorState extends State<Editor> {
         savingState.value = SavingState.saving;
     }
 
+    await _renameFileNow();
+
     final filePath = coreInfo.filePath + Editor.extension;
     final Uint8List bson;
     final OrderedAssetCache assets;
@@ -919,7 +921,7 @@ class EditorState extends State<Editor> {
     final newName = filenameTextEditingController.text;
     if (newName == coreInfo.fileName) return;
 
-    if (_filenameFormKey.currentState?.validate() ?? false) {
+    if (_filenameFormKey.currentState?.validate() != null) {
       coreInfo.filePath = await FileManager.moveFile(
           coreInfo.filePath + Editor.extension, newName + Editor.extension);
       coreInfo.filePath = coreInfo.filePath