Send GeoJSON data from worker to main if loaded from a URL

[lucaswoj]

Summary

Part of #4364

This PR carves out an exception from the optimization added in #6668. When GeoJSON data is loaded from a URL, we now send it back to the main thread so that it can be:

• Returned from map.getStyle()
• Used in GeoJSONSource#_getShouldReloadTileOptions for faster GeoJSONSource#updateData operations (ref Use only bounds for geojson diff tile reload  #6800)
• (Maybe someday) used in queryRenderedFeatures to return original feature properties (ref fix: Don't serialize GeoJSON vector tiles from the worker to support undefined properties #6803)

When GeoJSON is provided inline or via diff updates, the main thread already has the data, so we skip sending it back (preserving the #6668 optimization).

This will make GeoJSONSource#updateData much faster when the GeoJSON data was loaded from a URL.

Benchmarks

$ npm run benchmark -- GeoJSONSourceUpdateData && npm run benchmark -- GeoJSONSourceSetData 

> [email protected] benchmark
> node --no-warnings --loader ts-node/esm test/bench/run-benchmarks.ts GeoJSONSourceUpdateData

Starting headless chrome at: http://localhost:9966/test/bench/versions/index.html
                                      v5.14.0                  main  set-data-url 85c1f56 
 GeoJSONSourceUpdateData                                92.3814 ms            92.6344 ms 

> [email protected] benchmark
> node --no-warnings --loader ts-node/esm test/bench/run-benchmarks.ts GeoJSONSourceSetData

Starting headless chrome at: http://localhost:9966/test/bench/versions/index.html
                                   v5.14.0                  main  set-data-url 85c1f56 
 GeoJSONSourceSetData                               279.7234 ms           284.3850 ms 

Launch Checklist

• Confirm your changes do not include backports from Mapbox projects (unless with compliant license)
• Briefly describe the changes in this PR.
• Link to related issues.
• Include before/after visuals or gifs if this PR includes visual changes.
• Write tests for all new functionality.
• Document any changes to public APIs.
• Post benchmark scores.
• Add an entry to CHANGELOG.md under the ## main section.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.42%. Comparing base (f681bbb) to head (85c1f56).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6811   +/-   ##
=======================================
  Coverage   92.42%   92.42%           
=======================================
  Files         288      288           
  Lines       23807    23809    +2     
  Branches     5056     5058    +2     
=======================================
+ Hits        22003    22005    +2     
  Misses       1804     1804           

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