fix: debounce causes save cell data fail

frontend/app_flowy/lib/plugins/grid/application/cell/select_option_editor_bloc.dart

@@ -111,7 +111,7 @@ class SelectOptionCellEditorBloc
   void _loadOptions() {
     _delayOperation?.cancel();
     _delayOperation = Timer(const Duration(milliseconds: 10), () {
-      _selectOptionService.getOpitonContext().then((result) {
+      _selectOptionService.getOptionContext().then((result) {
         if (isClosed) {
           return;
         }

frontend/app_flowy/lib/plugins/grid/application/cell/select_option_service.dart

@@ -55,7 +55,7 @@ class SelectOptionService {
     return GridEventUpdateSelectOption(payload).send();
   }
 
-  Future<Either<SelectOptionCellDataPB, FlowyError>> getOpitonContext() {
+  Future<Either<SelectOptionCellDataPB, FlowyError>> getOptionContext() {
     final payload = GridCellIdPB.create()
       ..gridId = gridId
       ..fieldId = fieldId

frontend/app_flowy/lib/plugins/grid/presentation/widgets/cell/number_cell.dart

@@ -65,6 +65,8 @@ class _NumberCellState extends GridFocusNodeCellState<GridNumberCell> {
 
   @override
   Future<void> dispose() async {
+    _delayOperation = null;
+    _cellBloc.close();
     super.dispose();
   }
 
@@ -72,15 +74,10 @@ class _NumberCellState extends GridFocusNodeCellState<GridNumberCell> {
   Future<void> focusChanged() async {
     if (mounted) {
       _delayOperation?.cancel();
-      _delayOperation = Timer(const Duration(milliseconds: 300), () {
+      _delayOperation = Timer(const Duration(milliseconds: 30), () {
         if (_cellBloc.isClosed == false &&
             _controller.text != contentFromState(_cellBloc.state)) {
           _cellBloc.add(NumberCellEvent.updateCell(_controller.text));
-
-          if (!mounted) {
-            _delayOperation = null;
-            _cellBloc.close();
-          }
         }
       });
     }

frontend/app_flowy/lib/plugins/grid/presentation/widgets/cell/text_cell.dart

@@ -76,7 +76,7 @@ class _GridTextCellState extends GridFocusNodeCellState<GridTextCell> {
 
   @override
   Future<void> dispose() async {
-    _delayOperation?.cancel();
+    _delayOperation = null;
     _cellBloc.close();
     super.dispose();
   }
@@ -85,7 +85,7 @@ class _GridTextCellState extends GridFocusNodeCellState<GridTextCell> {
   Future<void> focusChanged() async {
     if (mounted) {
       _delayOperation?.cancel();
-      _delayOperation = Timer(const Duration(milliseconds: 300), () {
+      _delayOperation = Timer(const Duration(milliseconds: 30), () {
         if (_cellBloc.isClosed == false &&
             _controller.text != _cellBloc.state.content) {
           _cellBloc.add(TextCellEvent.updateText(_controller.text));