[Improvement] When adding a new catalog to the Gravino UI only the new catalog is initially displayed

### What would you like to be improved?

Only the new catalog is initially displayed, the others re-appear after a delay.

### How should we improve?

_No response_

Start by reproducing the issue in the Gravino UI: add a new catalog and observe the catalog list immediately afterward. Trace the UI's catalog refresh or loading flow to determine why existing catalogs are delayed, and consider the work done when all catalogs remain visible immediately after adding one.

Written by the indexing model from the issue text.