mgr/dashboard: fix UI modal issues

mgr/dashboard: fix UI modal issues

- Fix bs-modal getting hidden behind navbar
- Reuse the project name for tab title
- Readonly user shows an empty space in the administration dropdown
- Physical Disks Identify modal not opening up
   - add e2e in cephadm to make sure the modal always comes up
- Primary action doesn't need to be displayed for the read-only user

Fixes: https://tracker.ceph.com/issues/67547
Signed-off-by: Nizamudeen A <nia@redhat.com>