Description of problem:
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While syncing the repository on Red Hat Satellite 6.16 with RHEL-8 as the base OS, the sync progress only shows after refreshing the page, and does not get updated in real-time

Version-Release number of selected component (if applicable):
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Red Hat Satellite 6.16 on RHEL-8.9

How reproducible:
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Always

Steps to Reproduce:
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1. Enable the repository.

2. Go to Content ---> Sync Status ---> Check the repository ---> Click on the "Synchronize Now" button

3. Progress of the sync won't be displayed in real-time. So, refresh the web browser now to see the progress.

Actual results:
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Real-time repository sync progress does not show.

Expected results:
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Progress of repository sync process should be displayed in real-time.

Additional info:
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The Content ---> Sync Status page show N/A in all columns of the repository being synced. Screenshots attached to the bugzilla.

I have tested this on my lab Satellite Server 6.11/6.12/6.13/6.14. The process works there as expected, and shows the progress in real-time.