fix: show dataset names in the branch dropdown and use them when fetching snapshots (#657)
Before fix:
Follows up #657 (closed)
- Updated the branch dropdown to display: branch_name (dataset) format
- Updated snapshot fetching to pass both branchName and dataset parameters
After fix:
- Branch dropdown shows: main (dblab_pool/dataset_1), main (dblab_pool/dataset_2), main (dblab_pool/dataset_3)
- Snapshots are now fetched with both branch name AND dataset, allowing proper filtering
Edited by Artyom Kartasov
