mgr/dashboard: Merge disable and disableDesc

mgr/dashboard: Merge disable and disableDesc

Fixes: https://tracker.ceph.com/issues/46750
Signed-off-by: Tiago Melo <tmelo@suse.com>
(cherry picked from commit 2f1c977ec6d8a25b4e5cf7ce7f3155eac69761a6)

 Conflicts:
     src/pybind/mgr/dashboard/frontend/src/app/ceph/block/iscsi-target-list/iscsi-target-list.component.ts
     src/pybind/mgr/dashboard/frontend/src/app/ceph/block/rbd-namespace-list/rbd-namespace-list.component.ts
     src/pybind/mgr/dashboard/frontend/src/app/ceph/block/rbd-snapshot-list/rbd-snapshot-actions.model.ts
     src/pybind/mgr/dashboard/frontend/src/app/ceph/cluster/hosts/hosts.component.ts
     src/pybind/mgr/dashboard/frontend/src/app/ceph/cluster/mgr-modules/mgr-module-list/mgr-module-list.component.ts
     src/pybind/mgr/dashboard/frontend/src/app/ceph/pool/pool-list/pool-list.component.ts
     - `$localize` calls are not available in Angular 8. They are replaced with i18n.
     - Optional chaining syntax is not supported in typescript 3.5.3. Statements with optional chaining are re-coded.