Introduce aconfig flag to protect satellite state change listener API

Bug: 357638490
Test: m -j
Flag: EXEPMT flag change
Change-Id: Icae32d272f8733f4ad6b717d629795d6d2dd9f4a
diff --git a/flags/satellite.aconfig b/flags/satellite.aconfig
index 4806789..825ea78 100644
--- a/flags/satellite.aconfig
+++ b/flags/satellite.aconfig
@@ -61,4 +61,12 @@
   metadata {
     purpose: PURPOSE_BUGFIX
   }
+}
+
+# OWNER=rambowang TARGET=25Q2
+flag {
+  name: "satellite_state_change_listener"
+  namespace: "telephony"
+  description: "Introduce SatelliteManager APIs for carrier apps to monitor satellite state change"
+  bug: "357638490"
 }
\ No newline at end of file