Apply suggestions from code review

Co-authored-by: mab <[email protected]>

frontend/src/hooks/useSize.ts

@@ -1,6 +1,6 @@
 import { MutableRefObject, RefObject, useState } from 'react';
 import useResizeObserver from '@react-hook/resize-observer';
-import { ResizeObserver } from '@juggle/resize-observer';
+import { ResizeObserver as ResizeObserverPolyfill } from '@juggle/resize-observer';
 import useIsomorphicLayoutEffect from './useIsomorphicLayoutEffect';
 
 const useSize = (target: MutableRefObject<HTMLElement | null | undefined>) => {
@@ -11,7 +11,7 @@ const useSize = (target: MutableRefObject<HTMLElement | null | undefined>) => {
   }, [target]);
 
   useResizeObserver(target as RefObject<HTMLElement>, entry => setSize(entry.contentRect ?? null), {
-    polyfill: ResizeObserver,
+    polyfill: ResizeObserverPolyfill,
   });
   return size;
 };