[Deploy] Change default symbol server to a reliost instance

[mstange]

On about:config, set devtools.performance.recording.ui-base-url to https://deploy-preview-5578--perf-html.netlify.app to try it.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.64%. Comparing base (1a808fe) to head (6168006).
⚠️ Report is 35 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5578      +/-   ##
==========================================
- Coverage   85.64%   85.64%   -0.01%     
==========================================
  Files         313      313              
  Lines       31013    31013              
  Branches     8535     8449      -86     
==========================================
- Hits        26562    26561       -1     
- Misses       4021     4022       +1     
  Partials      430      430              

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[canova]

Should we close #5407?

[mstange]

Ah, right. Closed.