Fix structure field references in usockets context.c

Corrected references to the us_socket_flags structure fields:
- Fixed s->low_prio_state to s->flags.low_prio_state
- Removed reference to non-existent s->flags.is_cork field

This fixes compilation errors that were preventing the localAddress
feature from building properly.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

packages/bun-usockets/src/context.c

@@ -491,8 +491,7 @@ struct us_socket_t* us_socket_context_connect_resolved_dns_with_local_address(st
     s->context = context;
     s->timeout = 0;
     s->long_timeout = 0;
-    s->low_prio_state = 0;
-    s->flags.is_cork = 0;
+    s->flags.low_prio_state = 0;
     s->flags.is_paused = 0;
     s->flags.is_ipc = 0;
     s->next = 0;