Elasticsearch: Join by labels: No labels found

### What happened? After 10.2.9 the Join by labels transformation fails to find any labels with Elasticsearch datasource Group by Filters. ### What did you expect to happen? Join by labels detects labels as defined in the Filter Queries. ### Did this work before? Worked in 10.2.9 ### How do we reproduce it? 1. Create table visualisation with Elasticsearch datasource 2. Configure basic count metric with group by date histogram 3. Add a Group by Filters with labels defined 5. Add Join by labels transformation ### Is the bug inside a dashboard panel? _No response_ ### Environment (with versions)? Grafana: Grafana v12.0.2 (5bda17e7c1) // Open Source ### Grafana platform? A package manager (APT, YUM, BREW, etc.) ### Datasource(s)? Elasticsearch