Fix IPV6 ICE gather failure issue

[yngrtc]

[2026-02-10T00:23:39Z DEBUG webrtc::ice_gatherer] Resolved STUN server stun.l.google.com:19302 to 74.125.250.129:19302
[2026-02-10T00:23:39Z DEBUG webrtc::ice_gatherer] STUN client bound to 0.0.0.0:46260
[2026-02-10T00:23:39Z DEBUG webrtc::ice_gatherer] Resolving STUN server: stun.l.google.com:19302
[2026-02-10T00:23:39Z DEBUG webrtc::ice_gatherer] Resolved STUN server stun.l.google.com:19302 to [2001:4860:4864:5:8000::1]:19302
[2026-02-10T00:23:39Z DEBUG webrtc::ice_gatherer] STUN client bound to [::]:45307
[2026-02-10T00:23:39Z TRACE webrtc::peer_connection_driver] Sent 20 bytes to 74.125.250.129:19302 from 0.0.0.0:46260
[2026-02-10T00:23:39Z ERROR webrtc::peer_connection_driver] Failed to send to [2001:4860:4864:5:8000::1]:19302 from [::]:45307: Network is unreachable (os error 101)
[2026-02-10T00:23:39Z TRACE webrtc::peer_connection_driver] Received 32 bytes from 74.125.250.129:19302
[2026-02-10T00:23:39Z ERROR webrtc::peer_connection] I/O error: the DTLS transport has not started yet
test test_stun_gathering_with_google_stun has been running for over 60 seconds