feat: open floating explorer as Tree in Insert mode

src/tui.rs

@@ -833,6 +833,7 @@ mod tests {
     #[test]
     fn file_list_window_follows_control_j_k_selection() {
         let mut editor = Editor::open(None, vec![]).unwrap();
+        editor.set_file_picker_view("list").unwrap();
         editor.handle(Input::Char(' '));
         editor.handle(Input::Char('o'));
         let count = editor.file_picker().unwrap().entries().len();
@@ -864,6 +865,7 @@ mod tests {
     fn list_footers_show_remapped_and_disabled_selection_keys() {
         let mut editor = Editor::open(None, vec![]).unwrap();
         editor.set_file_explorer_view("list").unwrap();
+        editor.set_file_picker_view("list").unwrap();
         for key in ["ctrl+j", "ctrl+n", "down", "ctrl+k", "up"] {
             editor.bind("selection", key, None).unwrap();
         }
@@ -1422,6 +1424,10 @@ mod tests {
             editor.handle(Input::Char(' '));
             editor.handle(Input::Char(key));
             assert_eq!(editor.file_picker().unwrap().view, expected);
+            if expected == FileView::Tree {
+                assert!(editor.file_picker().unwrap().searching);
+                editor.handle(Input::Escape);
+            }
             for view in [
                 expected,
                 if expected == FileView::Tree {
@@ -1640,6 +1646,8 @@ mod tests {
         assert_eq!(viewports.offsets[&a_id], before);
         assert!(screen_text(&terminal).contains("Files"));
         editor.handle(Input::Escape);
+        assert!(editor.file_picker().unwrap().focused);
+        editor.handle(Input::Escape);
         terminal
             .draw(|frame| viewports.draw(frame, &editor))
             .unwrap();