mgr/dashboard: fix missing loader and zone group icon

mgr/dashboard: fix missing loader and zone group icon

- Add state="active" to cds-inline-loading in card-row component
  to properly show loading spinner for table row actions
- Replace parentChild icon with clusterIcon (web-services--cluster)
  for zone group representation in RGW multisite
- Remove parentChild from Icons enum and replace with
  WebServicesCluster in components.module.ts
- Import ComponentsModule in rgw.module.ts for cd-icon support

Signed-off-by: Afreen Misbah <afreen@ibm.com>
Assisted-by: Claude
Fixes: https://tracker.ceph.com/issues/76631