refactor: avoid eslint no-empty-function warning

Author: gabrieljablonski

src/components/Tooltip/Tooltip.tsx

@@ -164,8 +164,7 @@ const Tooltip = ({
     }
 
     if (!elementRefs.size) {
-      // eslint-disable-next-line @typescript-eslint/no-empty-function
-      return () => {}
+      return () => null
     }
 
     const enabledEvents: { event: string; listener: (event?: Event) => void }[] = []

src/components/TooltipController/TooltipController.tsx

@@ -122,8 +122,7 @@ const TooltipController = ({
     }
 
     if (!elementRefs.size) {
-      // eslint-disable-next-line @typescript-eslint/no-empty-function
-      return () => {}
+      return () => null
     }
 
     const observerCallback: MutationCallback = (mutationList) => {