Kk 1508 hero image over login dropdown (#746)

* fix: mock type bug

* fix: z-index bug

Author: timwessman

src/domain/eventGroup/eventGroup.module.scss

@@ -9,7 +9,6 @@
 .eventGroupDecoration {
   max-width: 100%;
   margin-top: variables.$spacing-xs;
-  z-index: 10;
   align-self: center;
   margin-bottom: -8%;
 

src/domain/profile/modal/__tests__/RequestVerificationTokenButton.test.tsx

@@ -53,7 +53,7 @@ describe('RequestVerificationTokenButton', () => {
 
   type MockProps = {
     success: boolean;
-    mutationCalledFunc?: ReturnType<typeof vi.fn>;
+    mutationCalledFunc?: () => void;
     delayMs?: number;
   };