Dashboard: Fix panel description event triggering every time panel is rendered (#68791)

public/app/features/dashboard/utils/getPanelChromeProps.tsx

@@ -99,7 +99,7 @@ export function getPanelChromeProps(props: CommonProps) {
     />
   );
 
-  const description = props.panel.description ? onShowPanelDescription() : undefined;
+  const description = props.panel.description ? onShowPanelDescription : undefined;
 
   const dragClass =
     !(props.isViewing || props.isEditing) && Boolean(props.isDraggable ?? true) ? 'grid-drag-handle' : '';