View field override (#18572)

## Context
This PR introduces overrides for view fields which will be useful for
page layout FIELDS widgets fields position/groups/visibility override +
restore logic.

packages/twenty-front/src/modules/views/utils/mapBoardFieldDefinitionsToViewFields.ts

@@ -13,6 +13,7 @@ export const mapBoardFieldDefinitionsToViewFields = (
       size: 0,
       position: fieldDefinition.position,
       isVisible: fieldDefinition.isVisible ?? true,
+      isOverridden: false,
       definition: fieldDefinition,
     }),
   );