Improve error handling on stream suspension

[victorges]

What does this pull request do? Explain your changes. (required)

This was made as I was trying to fix the stream suspension API. In the end,
no code changes are necessary and only the mist password was configured wrong.

This will make the errors a little clearer though.

Specific updates (required)

• Fix the auth challenge handling on the mist API to avoid a stack overflow on wrong password
• Fix the suspension dialog on the dashboard to not hang on screen forever on errors

How did you test each of these updates (required)
Sent to staging and tested the error flows.

Does this pull request close any open issues?
Related to API-38

Checklist

• I have read the CONTRIBUTING document.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Updated
livepeer-studio	✅ Ready (Inspect)	Visit Preview	Mar 31, 2023 at 7:54PM (UTC)

[codecov]

Codecov Report

Merging #1676 (6a41e22) into master (2d0af2f) will not change coverage.
The diff coverage is 0.00000%.

@@              Coverage Diff              @@
##              master       #1676   +/-   ##
=============================================
  Coverage   52.98203%   52.98203%           
=============================================
  Files             74          74           
  Lines           4896        4896           
  Branches         954         970   +16     
=============================================
  Hits            2594        2594           
  Misses          1969        1969           
  Partials         333         333           

Impacted Files	Coverage Δ
packages/api/src/controllers/mist-api.ts	0.00000% <0.00000%> (ø)

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 2d0af2f...6a41e22. Read the comment docs.

Impacted Files	Coverage Δ
packages/api/src/controllers/mist-api.ts	0.00000% <0.00000%> (ø)

[gioelecerati]

LGTM