fix: show sidebar after mouse wheel scrolling (#10657)

public/app/core/components/grafana_app.ts

@@ -167,6 +167,8 @@ export function grafanaAppDirective(playlistSrv, contextSrv, $timeout, $rootScop
       // mouse and keyboard is user activity
       body.mousemove(userActivityDetected);
       body.keydown(userActivityDetected);
+      // set useCapture = true to catch event here
+      document.addEventListener('wheel', userActivityDetected, true);
       // treat tab change as activity
       document.addEventListener('visibilitychange', userActivityDetected);