Move approvals to use ListSelectionView (#4275)

Unify selection menus:
- Move approvals to the vertical menu `ListSelectionView`
- Add header section to `ListSelectionView`

<img width="502" height="214" alt="image"
src="https://github.com/user-attachments/assets/f4b43ddf-3549-403c-ad9e-a523688714e4"
/>

<img width="748" height="214" alt="image"
src="https://github.com/user-attachments/assets/f94ac7b5-dc94-4dc0-a1df-7a8e3ba2453b"
/>

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Co-authored-by: pakrym-oai <pakrym@openai.com>

codex-rs/tui/src/bottom_pane/mod.rs

@@ -3,7 +3,6 @@ use std::path::PathBuf;
 
 use crate::app_event_sender::AppEventSender;
 use crate::tui::FrameRequester;
-use crate::user_approval_widget::ApprovalRequest;
 use bottom_pane_view::BottomPaneView;
 use codex_core::protocol::TokenUsageInfo;
 use codex_file_search::FileMatch;
@@ -16,7 +15,9 @@ use ratatui::layout::Rect;
 use ratatui::widgets::WidgetRef;
 use std::time::Duration;
 
-mod approval_modal_view;
+mod approval_overlay;
+pub(crate) use approval_overlay::ApprovalOverlay;
+pub(crate) use approval_overlay::ApprovalRequest;
 mod bottom_pane_view;
 mod chat_composer;
 mod chat_composer_history;
@@ -43,7 +44,6 @@ pub(crate) use chat_composer::InputResult;
 use codex_protocol::custom_prompts::CustomPrompt;
 
 use crate::status_indicator_widget::StatusIndicatorWidget;
-use approval_modal_view::ApprovalModalView;
 pub(crate) use list_selection_view::SelectionAction;
 pub(crate) use list_selection_view::SelectionItem;
 
@@ -397,7 +397,7 @@ impl BottomPane {
         };
 
         // Otherwise create a new approval modal overlay.
-        let modal = ApprovalModalView::new(request, self.app_event_tx.clone());
+        let modal = ApprovalOverlay::new(request, self.app_event_tx.clone());
         self.pause_status_timer_for_modal();
         self.push_view(Box::new(modal));
     }