Part of #21585
Android 17 blocks LAN traffic in both directions (TCP and UDP, including
broadcast and multicast) without ACCESS_LOCAL_NETWORK. Ask for it when
networking, the built-in ad hoc server, UPnP, share-on-startup or the
remote debugger gets turned on, when a game initializes ad hoc with
networking enabled, and at startup if a server is set to start then.
A denied ad hoc send fails with EPERM, which the games never see, so show
a message for it.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>