fix(ci) fix guardian ci (#13911)

## Summary
#13910 was merged with some unused imports, let's fix this

## Testing
- [x] Let's make sure CI is green

---------

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

codex-rs/tui/src/chatwidget/snapshots/codex_tui__chatwidget__tests__experimental_popup_includes_guardian_approval_linux.snap

@@ -0,0 +1,19 @@
+---
+source: tui/src/chatwidget/tests.rs
+expression: popup
+---
+  Experimental features
+  Toggle experimental features. Changes are saved to config.toml.
+
+› [ ] JavaScript REPL              Enable a persistent Node-backed JavaScript REPL for interactive website debugging
+                                   and other inline JavaScript execution capabilities. Requires Node >= v22.22.0
+                                   installed.
+  [ ] Bubblewrap sandbox           Try the new linux sandbox based on bubblewrap.
+  [ ] Multi-agents                 Ask Codex to spawn multiple agents to parallelize the work and win in efficiency.
+  [ ] Apps                         Use a connected ChatGPT App using "$". Install Apps via /apps command. Restart
+                                   Codex after enabling.
+  [ ] Guardian approvals           Let a guardian subagent review `on-request` approval prompts instead of showing
+                                   them to you, including sandbox escapes and blocked network access.
+  [ ] Prevent sleep while running  Keep your computer awake while Codex is running a thread.
+
+  Press space to select or enter to save for next conversation

codex-rs/tui/src/chatwidget/tests.rs

@@ -6949,6 +6949,9 @@ async fn experimental_popup_includes_guardian_approval() {
     chat.open_experimental_popup();
 
     let popup = render_bottom_popup(&chat, 120);
+    #[cfg(target_os = "linux")]
+    assert_snapshot!("experimental_popup_includes_guardian_approval_linux", popup);
+    #[cfg(not(target_os = "linux"))]
     assert_snapshot!("experimental_popup_includes_guardian_approval", popup);
 }