fix: Multiplayer network fixes and airplane mode

- Auto-select network interface for direct connect/host room
- Always recreate ENet client on join for fresh bindings
- Add airplane mode toggle (Desktop & Android)
- Fix JWT verification with empty verify_uid
- Improve content-type handling for JWT endpoints

Signed-off-by: Zephyron <zephyron@citron-emu.org>

src/core/hle/result.h

@@ -52,6 +52,7 @@ enum class ErrorModule : u32 {
     Util = 33,
     TIPC = 35,
     ANIF = 37,
+    Module38 = 38, // Unknown/Undefined module - stubbed for multiplayer compatibility
     CRT = 39,
     ETHC = 100,
     I2C = 101,