Set restrict local network aconfig flag for 26q2 dates

Local net protections is introduced in B as a developer opt-in, on dev
builds; the feature flag is meant to be used when enforcement begins in
2026

Bug: 396116600
Test: atest ConnectivityCoverageTests:android.net.connectivity.com.android.server.connectivity.PermissionMonitorTest
Change-Id: Id5e7a7cf825f10f90edd600ea2567cfe6efd2e98
diff --git a/common/flags.aconfig b/common/flags.aconfig
index 5f279fa..51b4fc0 100644
--- a/common/flags.aconfig
+++ b/common/flags.aconfig
@@ -171,6 +171,6 @@
   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"
+  bug: "388774939"
   is_fixed_read_only: true
 }