Improve prebuild status messages including errors on the prebuild page

[gtsiolis]

Problem to solve

Back in #8805, we improved the prebuild page (with logs and status) so that workspace instance status is used and prebuild status is reflected more accurately.

See also relevant issues:

• Some failed prebuilds use a wrong status label #5611
• Some prebuilds use different status on project cards and prebuild page #7384
• [dashboard, (server?)] Inconsistent derivation of prebuild status #8197

Re-posting a comment from @easyCZ in #8805 (comment):

My intention for follow-up PRs is to clean-up the errors the server provides such that we treat them as "publicly facing errors" and include actionable feedback.

Some errors include also duplicate information that shows up on the status as well as inside the prebuild logs, see relevant comment in #8805 (comment).

Proposal

To this extend, some error messages could be rephrased to look less scary or technical for users while providing full context of the error when possible. See relevant comments:

• [dashboard] Show prebuild status based on prebuild workspace record #8805 (comment)
• [dashboard] Show prebuild status based on prebuild workspace record #8805 (comment)
• [dashboard] Show prebuild status based on prebuild workspace record #8805 (comment)

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.