insights: Don't allow users to delete LAM dashboard while in LAM
Created by: CristinaBirkel
Closes https://github.com/sourcegraph/sourcegraph/issues/32796 Stacks on https://github.com/sourcegraph/sourcegraph/pull/32901
Description
While in Limited Access Mode, users should not be able to:
- Delete the Limited Access Mode dashboard
- Remove insights from the Limited Access Mode dashboard
Test plan
While in Limited Access Mode:
- Try removing the LAM dashboard and verify that you get an error.
- Try removing an insight from the LAM dashboard and verify that you get an error.
While not in Limited Access Mode:
- Try removing an insight from the LAM dashboard and verify that you can.
- Try removing the LAM dashboard and verify that you can.