feat(nests): advertise both moq-lite-03 and moq-lite-04 ALPNs

Production moq-relay (moq.nostrnests.com) and the kixelated browser
client both ship Lite-04 now. We previously only advertised
moq-lite-03 in the wt-available-protocols header, so a Lite-04-only
relay deployment would refuse the WebTransport CONNECT (no mutual
sub-protocol).

Add moq-lite-04 to the advertised list. The on-the-wire framing for
Subscribe / Group / Announce did NOT change between Lite-03 and
Lite-04, so the existing codec handles either selection unchanged —
this is purely a handshake-layer addition. moq-lite-03 stays listed
first so a relay that supports both still picks the previously-tested
path.

Constants now live on MoqLiteAlpn alongside LITE_03 and LEGACY rather
than being a string literal in QuicWebTransportFactory.

https://claude.ai/code/session_014JfZJHSTvyYYWJbC9VbB47

nestsClient/src/commonMain/kotlin/com/vitorpamplona/nestsclient/moq/lite/MoqLiteMessages.kt

@@ -21,14 +21,23 @@
 package com.vitorpamplona.nestsclient.moq.lite
 
 /**
- * moq-lite ALPN strings. Lite-03 is preferred; `"moql"` is the legacy
- * combined ALPN that requires an in-band SETUP exchange.
+ * moq-lite ALPN strings. The on-the-wire framing for Subscribe / Group
+ * / Announce did NOT change between Lite-03 and Lite-04, so advertising
+ * both via `wt-available-protocols` is safe — the relay picks whichever
+ * it prefers and our existing codec paths handle either. We keep 03 in
+ * the list as the previously-tested target until the production relay's
+ * Lite-04 path has interop coverage.
+ *
+ * `"moql"` is the legacy combined ALPN that requires an in-band SETUP
+ * exchange — kept here for completeness; not advertised by the
+ * factory.
  *
  * Source: `kixelated/moq-rs/rs/moq-lite/src/version.rs:21-26`,
  * `@moq/lite/connection/connect.js:277`.
  */
 object MoqLiteAlpn {
     const val LITE_03: String = "moq-lite-03"
+    const val LITE_04: String = "moq-lite-04"
     const val LEGACY: String = "moql"
 }