<!--IssueSummary start--> <details> <summary> Everyone can contribute. [Help move this issue forward](https://handbook.gitlab.com/handbook/marketing/developer-relations/contributor-success/community-contributors-workflows/#contributor-links) while earning points, leveling up and collecting rewards. </summary> - [Label this issue](https://contributors.gitlab.com/manage-issue?action=label&projectId=278964&issueIid=550270) </details> <!--IssueSummary end--> Users should be able to define a panel tooltip directly in the dashboard YAML, but they are currently restricted to a Vue event being fired by the visualization itself. We should migrate the `showTooltip` Vue event to be an additional setting accepted by `setVisualizationOverrides`, to consolidate the panel logic.