fix: remove leave prompt

apps/100ms-custom-app/src/App.jsx

@@ -1,10 +1,4 @@
-import React, {
-  Suspense,
-  useCallback,
-  useEffect,
-  useRef,
-  useState,
-} from 'react';
+import React, { Suspense, useEffect, useRef, useState } from 'react';
 import { Flex, HMSPrebuilt } from '@100mslive/roomkit-react';
 import { useOverridePrebuiltLayout } from './hooks/useOverridePrebuiltLayout';
 import { useSearchParam } from './hooks/useSearchParam';
@@ -28,13 +22,6 @@ const App = () => {
   const { roomId, role } = getRoomIdRoleFromUrl();
   const { overrideLayout, isHeadless } = useOverridePrebuiltLayout();
   const hmsPrebuiltRef = useRef();
-  const confirmLeave = useCallback(e => {
-    e.returnValue = 'Are you sure you want to leave?';
-  }, []);
-  const removeExitListener = useCallback(
-    () => window.removeEventListener('beforeunload', confirmLeave),
-    []
-  );
 
   useEffect(() => {
     if (roomCode) {
@@ -88,11 +75,6 @@ const App = () => {
           authToken={authToken}
           roomId={roomId}
           role={role}
-          onLeave={removeExitListener}
-          onJoin={() => {
-            if (!isHeadless)
-              window.addEventListener('beforeunload', confirmLeave);
-          }}
           screens={overrideLayout ? overrideLayout : undefined}
           options={{
             userName: isHeadless ? 'Beam' : undefined,