Add broadcast when notification block state changes

At the app level, to match channel and group broadcasts.

Test: runtest systemui-notification
Bug: 63927402
Change-Id: If6bf8b468f90fe5ed225ea136425104a418d4974
diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index 93d852c..15c80f3 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -510,6 +510,7 @@
     <protected-broadcast android:name="android.os.action.ACTION_EFFECTS_SUPPRESSOR_CHANGED" />
     <protected-broadcast android:name="android.app.action.NOTIFICATION_CHANNEL_BLOCK_STATE_CHANGED" />
     <protected-broadcast android:name="android.app.action.NOTIFICATION_CHANNEL_GROUP_BLOCK_STATE_CHANGED" />
+    <protected-broadcast android:name="android.app.action.APP_BLOCK_STATE_CHANGED" />
 
     <protected-broadcast android:name="android.permission.GET_APP_GRANTED_URI_PERMISSIONS" />
     <protected-broadcast android:name="android.permission.CLEAR_APP_GRANTED_URI_PERMISSIONS" />