Listen to permission changes in permission monitor

Bug: 369646309
Test: atest
ConnectivityCoverageTests:android.net.connectivity.com.android.server.connectivity.PermissionMonitorTest

Change-Id: I23c524baaee6b9b06a855fb811906e5189ef03fd
diff --git a/common/flags.aconfig b/common/flags.aconfig
index 60a827b..5f279fa 100644
--- a/common/flags.aconfig
+++ b/common/flags.aconfig
@@ -165,3 +165,12 @@
   bug: "372936361"
   is_fixed_read_only: true
 }
+
+flag {
+  name: "restrict_local_network"
+  is_exported: true
+  namespace: "android_core_networking"
+  description: "Flag for controlling access to the local network behind a new runtime permission. Requires ConnectivityCompatChanges.RESTRICT_LOCAL_NETWORK to enable feature."
+  bug: "365139289"
+  is_fixed_read_only: true
+}