refacto(*): remove everything about default workspace (#9157)

## Summary
- [x] Remove defaultWorkspace in user
- [x] Remove all occurrence of defaultWorkspace and defaultWorkspaceId
- [x] Improve activate workspace flow
- [x] Improve security on social login
- [x] Add `ImpersonateGuard`
- [x] Allow to use impersonation with couple `User/Workspace`
- [x] Prevent unexpected reload on activate workspace
- [x] Scope login token with workspaceId 

Fix https://github.com/twentyhq/twenty/issues/9033#event-15714863042

packages/twenty-front/src/modules/users/components/UserProviderEffect.tsx

@@ -52,7 +52,10 @@ export const UserProviderEffect = () => {
     if (!isDefined(queryData?.currentUser)) return;
 
     setCurrentUser(queryData.currentUser);
-    setCurrentWorkspace(queryData.currentUser.defaultWorkspace);
+
+    if (isDefined(queryData.currentUser.currentWorkspace)) {
+      setCurrentWorkspace(queryData.currentUser.currentWorkspace);
+    }
 
     const {
       workspaceMember,