v.25.8Improvement

Dashboard: the tooltip will not overflow

Dashboard: the tooltip will not overflow the container at the top. #84072 (Alexey Milovidov).
Fixes the dashboard tooltip rendering so that it does not overflow outside the container at the top.

Why it matters

This change improves the user interface of the ClickHouse dashboard by ensuring tooltips remain fully visible within their container, preventing them from being cut off or displayed outside the visible area. This enhances usability and readability of tooltips in dashboard visualizations.

How to use it

The fix is applied automatically in the dashboard component. Users do not need to enable any settings; tooltip behavior will be improved in the updated version after applying this change.