LIG-10239 Wire sample-tag distribution comparison

[ikondrat]

Summary

• load sample tags for the active image dataset without reusing the grid's selected-tag state
• keep a local, ordered comparison selection and prune IDs that are no longer available
• issue grouped class-count requests for All types, Classification, Object detection, and Segmentation
• apply the complete active image filter and current annotation count mode to every grouped request
• attach grouped responses to the matching distribution source/group for chart rendering

Stack

• Base: LIG-10246 Add sample-tag comparison selector #1694 (LIG-10246 comparison selector)
• Previous: [LIG-10245] Add grouped sample-tag counts query hook #1693 (LIG-10245 grouped query hook)
• Backend: [LIG-10238] Batch class counts by selected sample tags #1692 (LIG-10238 grouped counts endpoint)
• This PR: LIG-10239
• Follow-up: LIG-10240 renders the attached comparison data as grouped chart series

Testing instructions

1. Check out this branch with the preceding stacked PRs.
2. Generate the local API client if it is not already present:

   cd lightly_studio_view
   npm run generate-api-client

3. Run:

   make static-checks

4. Open an image collection with sample tags and the Distribution panel.
5. Select multiple tags in Compare by and verify grouped count requests are sent for the current All types / annotation-type scopes.
6. Toggle filters and count mode, then verify the grouped requests update while the dataset grid's active tag filter remains unchanged.
7. Clear the comparison selection and verify grouped requests are disabled and the overall distribution remains available.

Validation

• make static-checks (Node 24.13.1): passed

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch kondrat-lig-10239-frontend-sample-tag-comparison-selection-and-query-wiring

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