remote_disable_rbd_mirroring in actionutils.sh runs disable commands immediately, but the pool replication health may not yet be OK if images are still syncing.

The health check in handlePoolDisablement likely fails with "pool replication status not OK(%s), Can't proceed" instead of the expected "in Image mirroring mode" error.

Potential fix consists of a wait until replication health is okay prior to running this.

eg:

• https://github.com/canonical/microceph/actions/runs/23201754143/job/67426883669
• https://github.com/canonical/microceph/actions/runs/23213839440/job/67470194261