fix: 🐛 visible fields count updates when toggling field (#16789)

Fixes: #16734

Solution:
The ObjectOptionsDropdownDefaultView was reading from
recordIndexFieldDefinitionsState via useObjectOptionsForBoard, while
field visibility changes update currentRecordFieldsComponentState. This
caused the "X shown" count to remain stale after hiding fields.

Changed to use visibleRecordFieldsComponentSelector (same state source
used by ViewFieldsVisibleDropdownSection) so both components react to
the same state updates.



https://github.com/user-attachments/assets/62eb5c98-f15f-4ee8-bdce-1ab4e4752f66

packages/twenty-front/src/modules/object-record/object-options-dropdown/components/ObjectOptionsDropdownDefaultView.tsx

@@ -1,6 +1,6 @@
 import { OBJECT_OPTIONS_DROPDOWN_ID } from '@/object-record/object-options-dropdown/constants/ObjectOptionsDropdownId';
 import { useObjectOptionsDropdown } from '@/object-record/object-options-dropdown/hooks/useObjectOptionsDropdown';
-import { useObjectOptionsForBoard } from '@/object-record/object-options-dropdown/hooks/useObjectOptionsForBoard';
+import { visibleRecordFieldsComponentSelector } from '@/object-record/record-field/states/visibleRecordFieldsComponentSelector';
 import { DropdownContent } from '@/ui/layout/dropdown/components/DropdownContent';
 import { DropdownMenuItemsContainer } from '@/ui/layout/dropdown/components/DropdownMenuItemsContainer';
 import { DropdownMenuSeparator } from '@/ui/layout/dropdown/components/DropdownMenuSeparator';
@@ -24,18 +24,16 @@ import { useCopyToClipboard } from '~/hooks/useCopyToClipboard';
 
 export const ObjectOptionsDropdownDefaultView = () => {
   const { t } = useLingui();
-  const { recordIndexId, objectMetadataItem, onContentChange } =
-    useObjectOptionsDropdown();
+  const { recordIndexId, onContentChange } = useObjectOptionsDropdown();
 
   const { currentView } = useGetCurrentViewOnly();
 
-  const { visibleBoardFields } = useObjectOptionsForBoard({
-    objectNameSingular: objectMetadataItem.nameSingular,
-    recordBoardId: recordIndexId,
-    viewBarId: recordIndexId,
-  });
+  const visibleRecordFields = useRecoilComponentValue(
+    visibleRecordFieldsComponentSelector,
+    recordIndexId,
+  );
 
-  const visibleFieldsCount = visibleBoardFields.length;
+  const visibleFieldsCount = visibleRecordFields.length;
 
   const selectableItemIdArray = [
     'Fields',