codex: fix CI failure on PR #16805

Include nested response helper modules in the core_test_support Bazel target so the new realtime WebRTC test server source is visible to macOS Bazel and argument-comment-lint jobs.

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

codex-rs/core/tests/common/BUILD.bazel

@@ -3,7 +3,10 @@ load("//:defs.bzl", "codex_rust_crate")
 codex_rust_crate(
     name = "common",
     crate_name = "core_test_support",
-    crate_srcs = glob(["*.rs"]),
+    crate_srcs = glob([
+        "*.rs",
+        "responses/**/*.rs",
+    ]),
     lib_data_extra = [
         "//codex-rs/core:model_availability_nux_fixtures",
     ],