Add method to get blocked channel counts

Test: runtest systemui-notification
Bug: 72442731
Change-Id: I9ff30003edd0325f0ee0ad7154962c38523f9218
diff --git a/core/java/android/app/INotificationManager.aidl b/core/java/android/app/INotificationManager.aidl
index ddd0656..5067e19 100644
--- a/core/java/android/app/INotificationManager.aidl
+++ b/core/java/android/app/INotificationManager.aidl
@@ -73,6 +73,7 @@
     ParceledListSlice getNotificationChannelsForPackage(String pkg, int uid, boolean includeDeleted);
     int getNumNotificationChannelsForPackage(String pkg, int uid, boolean includeDeleted);
     int getDeletedChannelCount(String pkg, int uid);
+    int getBlockedChannelCount(String pkg, int uid);
     void deleteNotificationChannelGroup(String pkg, String channelGroupId);
     NotificationChannelGroup getNotificationChannelGroup(String pkg, String channelGroupId);
     ParceledListSlice getNotificationChannelGroups(String pkg);