[Catalyst] Avoid creating new KeyValueStore for AirplaneModePreference

NO_IFTTT=Catalyst only

Bug: 375925972
Flag: com.android.settings.flags.catalyst_network_provider_and_internet_screen
Test: atest
Change-Id: I1cffcc68358f36d36e14cde5997907816ebe08a4

src/com/android/settings/network/AirplaneModePreference.kt

@@ -152,7 +152,7 @@ class AirplaneModePreference :
         data: Intent?,
     ): Boolean {
         if (requestCode == REQUEST_CODE_EXIT_ECM && resultCode == Activity.RESULT_OK) {
-            storage(context).setBoolean(KEY, true)
+            context.getKeyValueStore(KEY)?.setBoolean(KEY, true)
         }
         return true
     }