Add support for Data Links in State Timeline panel to pass selected state time range

<!-- Please only use this template for submitting feature requests --> **Why is this needed**: The **State Timeline** visualization displays different state intervals (e.g., failing, success, etc.) along a timeline. When hovering over a state, Grafana shows its start time and duration. Currently, there is no way to create a **Data Link** that passes this specific time range — the start and end of the selected state — to another dashboard. This limits the ability to perform detailed, context-aware drilldowns (e.g., opening a related dashboard to analyze metrics for the exact period of a failure). Adding this functionality would greatly improve observability workflows, especially when investigating incidents or analyzing state transitions. **What would you like to be added**: Add support in the **State Timeline** panel for **Data Links** that can reference the selected state’s start time (`__field.startTime__`) and end time (`__field.startTime__` +` __field.duration__`) — allowing the linked dashboard to automatically set its time range accordingly. For example, clicking a state could open another dashboard with the time range pre-filled to match that state’s interval. **Who is this feature for?** This feature would benefit operators, SREs, and developers who use State Timeline panels for monitoring systems, pipelines, or workflows and need to quickly drill down into related dashboards for a specific state’s duration. --- If there’s enough community interest, we’re open to contributing a PR to implement this enhancement.