Add update chevron (#5988)

Fixes #5986 


1. Added right chevron to Fields Menu Item
<img width="735" alt="Screenshot 2024-06-21 at 5 59 46 PM"
src="https://github.com/twentyhq/twenty/assets/63531478/1515aba0-6732-424d-a0b3-5cc826a35b16">



2. Changed color of Hidden fields menu item chevron and stroke of left
chevron
<img width="735" alt="Screenshot 2024-06-21 at 6 21 30 PM"
src="https://github.com/twentyhq/twenty/assets/63531478/20952197-2f09-486c-a3bb-5b6c285a6996">

---------

Co-authored-by: Lucas Bordeau <bordeau.lucas@gmail.com>

packages/twenty-front/src/modules/object-record/record-index/options/components/RecordIndexOptionsDropdownContent.tsx

@@ -132,6 +132,7 @@ export const RecordIndexOptionsDropdownContent = ({
             onClick={() => handleSelectMenu('fields')}
             LeftIcon={IconTag}
             text="Fields"
+            hasSubMenu
           />
           <MenuItem
             onClick={() => openRecordSpreadsheetImport()}