codex: fix CI failure on PR #15237

Co-authored-by: Codex <noreply@openai.com>

codex-rs/codex-api/src/endpoint/realtime_websocket/methods.rs

@@ -20,7 +20,6 @@ use futures::SinkExt;
 use futures::StreamExt;
 use http::HeaderMap;
 use http::HeaderValue;
-use serde_json::Value;
 use std::collections::HashMap;
 use std::sync::Arc;
 use std::sync::atomic::AtomicBool;

codex-rs/codex-api/src/endpoint/realtime_websocket/mod.rs

@@ -1,5 +1,5 @@
 pub mod methods;
-mod methods_common;
+pub(crate) mod methods_common;
 mod methods_v1;
 mod methods_v2;
 pub mod protocol;