Dashboards: Geomap panel displays single data link 3 times in pop up window

### What happened? In Grafana 12.2.0 a single **data link** defined in a **Geomap** will be displayed 3 times on separate lines in the popup window of a point on the map. ### What did you expect to happen? A data link should be displayed only once in the popup window ### Did this work before? It worked in Grafana 12.1.1 ### How do we reproduce it? 1. In a **geomap** define a data link with **URL** _https://www.google.com_ and **title** _Show train dettails_ 2. Enable _Open in new tab_ 3. Click on a point in the map 4. <img width="461" height="361" alt="Image" src="https://github.com/user-attachments/assets/95d58f97-c0e4-44b8-96cd-9252c99e3118" /> ### Is the bug inside a dashboard panel? | Key | Value | |--|--| | Panel | geomap @ 12.2.0 | | Grafana | Grafana v12.2.0 (92f1fba9b4) // Open Source | <details><summary>Panel debug snapshot dashboard</summary> ```json { "panels": [ { "id": 2, "title": "Reproduced with embedded data", "gridPos": { "h": 13, "w": 15, "x": 0, "y": 0 }, "type": "library-panel-ref", "datasource": { "type": "grafana", "uid": "grafana" }, "targets": [ { "refId": "A", "datasource": { "type": "grafana", "uid": "grafana" }, "queryType": "snapshot", "snapshot": [ { "schema": { "refId": "A", "meta": { "typeVersion": [ 0, 0 ], "executedQueryString": "SELECT DISTINCT ON (train_id)\n t.description AS train, timest AS time,\n ST_Y(geom) AS latitude, ST_X(geom) AS longitude,\n COALESCE(np.num_problems, 0) AS num_problems\n FROM gpspositions p\n JOIN trains t USING (train_id)\n LEFT JOIN (\n \tSELECT DISTINCT train_id, count(prob_id) OVER (PARTITION BY train_id) AS num_problems\n FROM problems p\n…