Enhance model picker (#7709)

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

@@ -1961,7 +1961,7 @@ fn reasoning_popup_escape_returns_to_model_popup() {
     chat.handle_key_event(KeyEvent::new(KeyCode::Esc, KeyModifiers::NONE));
 
     let after_escape = render_bottom_popup(&chat, 80);
-    assert!(after_escape.contains("Select Model and Effort"));
+    assert!(after_escape.contains("Select Model"));
     assert!(!after_escape.contains("Select Reasoning Level"));
 }