Data changes to prepare for workspaceMember page (#10439)

Workspace Member will get their own record page in the future.

This PR lays backend changes to prepare for this:
- Settings most fields on WorkspaceMember as system fields
- Renaming workspaceMember/workspaceMemberId to
forWorkspaceMember/forWorkspaceMemberId as it conflicts with the morph
relationship, if we want to be able to add a workspace member as
favorite

---------

Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>

packages/twenty-front/src/modules/favorites/favorite-folder-picker/components/FavoriteFolderPickerEffect.tsx

@@ -72,7 +72,7 @@ export const FavoriteFolderPickerEffect = ({
     const checkedFolderIds = favorites
       .filter(
         (favorite) =>
-          favorite.recordId === targetId && favorite.workspaceMemberId,
+          favorite.recordId === targetId && favorite.forWorkspaceMemberId,
       )
       .map((favorite) => favorite.favoriteFolderId || 'no-folder');
     setCheckedState(checkedFolderIds);