Use URL-state symbol server for profiler-cli function annotate

[canova]

Fixes #6050

function annotate --mode asm always fell back to the hardcoded http://localhost:3000 when --symbol-server wasn't passed to the annotate command, and ignored both ?symbolServer= from a loaded profiler.firefox.com URL and --symbol-server passed to pq load.

This commit changes the cli to resolve the symbol server inside ProfileQuerier.functionAnnotate via getSymbolServerUrl when no explicit URL is provided, so the value set by either source on the URL state is taken into account. An explicit --symbol-server on function annotate still overrides.

STR:

• Record a profile using samply
• Load it with the cli: profiler-cli load <samply profile link that includes the symbol server>
• Get a function handle in pq thread samples
• Run pq function annotate <handle>

It should now properly show the assembly without requiring pq function annotate --symbol-server <url>.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.77%. Comparing base (3182970) to head (502b4c8).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6051      +/-   ##
==========================================
- Coverage   83.78%   83.77%   -0.01%     
==========================================
  Files         329      329              
  Lines       34528    34547      +19     
  Branches     9659     9574      -85     
==========================================
+ Hits        28930    28943      +13     
- Misses       5169     5175       +6     
  Partials      429      429              

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