[v9.4.x] Consider y coord when determining bottom collision (#62506)

Consider y coord when determining bottom collision (#62403)

(cherry picked from commit b6f477ae03)

Co-authored-by: Kristina <kristina.durivage@grafana.com>

packages/grafana-ui/src/components/ContextMenu/ContextMenu.tsx

@@ -33,7 +33,7 @@ export const ContextMenu: React.FC<ContextMenuProps> = React.memo(
         const OFFSET = 5;
         const collisions = {
           right: window.innerWidth < x + rect.width,
-          bottom: window.innerHeight < rect.bottom + rect.height + OFFSET,
+          bottom: window.innerHeight < y + rect.height + OFFSET,
         };
 
         setPositionStyles({