Update seller store experience

packages/database/migrations/016_collection_asset_pending_selection_default.sql

@@ -0,0 +1,8 @@
+SET search_path TO atlas, public;
+
+ALTER TABLE collection_asset_transfers
+    ALTER COLUMN status SET DEFAULT 'pending_selection';
+
+CREATE INDEX ix_collection_asset_transfers_pending_selection
+    ON collection_asset_transfers (workspace_id, collection_item_id, source_snapshot_revision, created_at)
+    WHERE status = 'pending_selection';