Plugin lock changes are missing from Source Control commits

Changes to a solution's plugin selections are missing from Source Control > Commit Changes. The plugin lock file, Packages/objo.lock.json, can be changed in the solution folder and shown by an external Git client, while Studio offers no corresponding change to commit and incorrectly reports that the change is outside the solution.

Studio should include plugin settings in its solution changes and allow the selected settings to be committed. A first commit created through Studio should also include the saved plugin lock.