Description of problem:

When we navigate to Hosts -> Content Hosts -> Select few content hosts -> Select Action -> "Manage Repository Sets", this page list all available repositories based on the imported manifest which we see on Red Hat Repositories page. Ideally, it should list only enabled repositories on the satellite. 

When we search for the required repository name then search does not work properly, ie: the search is limited to the first 20 entries listed on the page. 

In Satellite 6.3 it lists only enabled and synced repositories on this page. 

Version-Release number of selected component (if applicable):
Satellite 6.4

How reproducible:
Always

Steps to Reproduce:
1. Navigate to Hosts -> Content Hosts -> Select few content hosts -> Select Action -> "Manage Repository Sets".
2. Here we see all available repositories 
3. In the search box try to search for "tools" or any other repository name. 
4. Search is limited to first 20 entries listed on the page. 

Actual results:
- "Repository Sets Management" page lists all available repos instead of listing only enabled repositories on the satellite.
- The search option is limited to entries listed on the first page.

Expected results:
- "Repository Sets Management" page should list only enabled repositories on the satellite.
- The search should consider entries on all pages and it should not be limited to the content listed on the first page.