Fix from-url with binary profiles

[mstange]

Main | Deploy preview

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The function _extractJsonFromResponse was assuming that anything that's not a zip file must be JSON. However this means that from-url wasn't working with binary profile formats (json-slabs, simpleperf, art trace).

This PR makes it so that fetchProfile no longer calls JSON.parse, but instead the interpretation of the bytes happens entirely within unserializeProfileOfArbitraryFormat.

[codecov]

Codecov Report

❌ Patch coverage is 83.33333% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 83.77%. Comparing base (52f65d8) to head (7eaad98).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/actions/receive-profile.ts	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6072      +/-   ##
==========================================
- Coverage   83.77%   83.77%   -0.01%     
==========================================
  Files         329      329              
  Lines       34559    34543      -16     
  Branches     9574     9665      +91     
==========================================
- Hits        28952    28938      -14     
+ Misses       5178     5176       -2     
  Partials      429      429              

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