fix flaky canLeaveChat test

Author: nkdengineer

tests/unit/ReportUtilsTest.ts

@@ -4064,6 +4064,7 @@ describe('ReportUtils', () => {
                         notificationPreference: CONST.REPORT.NOTIFICATION_PREFERENCE.HIDDEN,
                     },
                 },
+                chatType: undefined,
             };
 
             await Onyx.set(ONYXKEYS.SESSION, {email: currentUserEmail, accountID: currentUserAccountID});