Add a delay() to MessageBundleTest tearDown()

The test after MessageBundleTest is not run if the delay() is
missing in it's tearDown().  Apply the same delay() as seen in
the other tearDown() methods.

Bug: 65435367
Test: Via CTSVerifier run 'Notification Listener Test' under 'NOTIFICATION'
Change-Id: I1e526e224e5cb34c7ad19948f5fbc7a20d95a7a6
(cherry picked from commit 6ac29af1b523969b2803a2949e43b1c94db3f518)
diff --git a/apps/CtsVerifier/src/com/android/cts/verifier/notifications/NotificationListenerVerifierActivity.java b/apps/CtsVerifier/src/com/android/cts/verifier/notifications/NotificationListenerVerifierActivity.java
index 20e7d1e..f09a192 100644
--- a/apps/CtsVerifier/src/com/android/cts/verifier/notifications/NotificationListenerVerifierActivity.java
+++ b/apps/CtsVerifier/src/com/android/cts/verifier/notifications/NotificationListenerVerifierActivity.java
@@ -987,6 +987,7 @@
         @Override
         void tearDown() {
             deleteChannel();
+            delay();
         }
 
         private void sendMessagingNotification() {