Fix promoteId support for GeoJSONSource#updateData

[lucaswoj]

GeoJSONSource#updateData did not work with promoteId. This PR fixes support and establishes a single point of truth for the getFeatureId operation.

Inspired by #6690 (comment)
Ref #4364
Ref #6562

Launch Checklist

• Confirm your changes do not include backports from Mapbox projects (unless with compliant license) - if you are not sure about this, please ask!
• 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 92.21%. Comparing base (ad813fa) to head (248de42).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6703      +/-   ##
==========================================
- Coverage   92.21%   92.21%   -0.01%     
==========================================
  Files         285      286       +1     
  Lines       23732    23731       -1     
  Branches     5053     5052       -1     
==========================================
- Hits        21884    21883       -1     
  Misses       1848     1848              

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[lucaswoj]

Interaction with clustering needs more thought