Feature: Surface in the UI repositories that did not backfill via the ETL or that are currently being backfilled via the ETL

[nickytonline]

As a user, I want to be notified in flows of the application that involve repositories if they were backfilled unsuccessfully as well as if they are in the process of being backfilled.

Relates to https://github.com/open-sauced/etl/issues/171

Scenarios:

• Tracking repositories in workspaces
• others?

[github-actions]

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