Send Snooze callback for Assistant

On selection of a snooze context SnoozeCriterion.

Test: runtest systemui-notification & make cts-verifier
Change-Id: Iaca567100c29295fbbf1d327195a114106909652
diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index a77a9cd..84b03d2 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -2993,7 +2993,7 @@
         android:protectionLevel="signature" />
 
     <!-- Must be required by an {@link
-         android.service.notification.NotificationAssistantService to ensure that only the system
+         android.service.notification.NotificationAssistantService} to ensure that only the system
          can bind to it.
          <p>Protection level: signature
     -->