fix: use main's EventDisplay.tsx and fix test imports

- Revert to main's EventDisplay.tsx (had wrong version from old commits)
- Fix EventRepetition.test.tsx import path

__test__/features/Events/EventRepetition.test.tsx

@@ -8,7 +8,7 @@ import {
   createEventHandlers,
   EventHandlersProps,
 } from "../../../src/components/Calendar/handlers/eventHandlers";
-import EventPreviewModal from "../../../src/components/Event/EventDisplayPreview";
+import EventPreviewModal from "../../../src/features/Events/EventDisplayPreview";
 
 describe("Recurrence Event Behavior Tests", () => {
   const mockOnClose = jest.fn();