Ensure users are able to track the status of uploads being processed

[rohan-at-sentry]

Problem to Solve

Codecov reports often display partial data on the PR comment and commits tab causing users to perceive them as inaccurate or incomplete, which causes user friction and lack of trust in our reporting.

Additionally, errors are not communicated on the PR comment to a developer unless the notify_error setting is enabled - leading to false angst or comfort as the case may be

Solution

• Display the comments on PR only after the full report is aggregated - based on when check is complete. note: today, the report shows it's unrelated to the check status, meaning the report may show before/after the check is done.

  • Inform users of an error: If an error occurs, display:
    • Contextual messaging explaining the issue
    • Available data with clear copy indicating it may be incomplete or inaccurate
    • Deprecates notify_error and becomes default behavior

• Display Coverage data and files changed/indirect changes sections on commits page only after the full report is aggregated.

  • Inform users of error. If an error occurs display
    • Upload count (x successfully processed, y failed)

view designs PR comment

view designs commits page

[rohan-at-sentry]

This is a focused epic implementation epic spawning from a large discover effort spanning a host of issues, chiefly

• 1.B Platform: Determine Reporting Capabilities #2919
• Implement the Upload processing status UI component #2522 (comment)

the above issues can be closed out in favor of this current one, just linking here for good bookkeeping