Fix hooks tests types

app/soapbox/hooks/__tests__/useDimensions.test.ts

@@ -6,7 +6,7 @@ let listener: ((rect: any) => void) | undefined = undefined;
 
 (window as any).ResizeObserver = class ResizeObserver {
 
-  constructor(ls) {
+  constructor(ls: any) {
     listener = ls;
   }