[macOS] Use "file" icon for bundles in the file dialogs.

editor/gui/editor_file_dialog.cpp

@@ -229,6 +229,7 @@ void EditorFileDialog::_update_theme_item_cache() {
 	theme_cache.filter_box = get_editor_theme_icon(SNAME("Search"));
 	theme_cache.file_sort_button = get_editor_theme_icon(SNAME("Sort"));
 
+	theme_cache.file = get_editor_theme_icon(SNAME("File"));
 	theme_cache.folder = get_editor_theme_icon(SNAME("Folder"));
 	theme_cache.folder_icon_color = get_theme_color(SNAME("folder_icon_color"), SNAME("FileDialog"));
 
@@ -1114,9 +1115,9 @@ void EditorFileDialog::update_file_list() {
 			item_list->add_item(dir_name);
 
 			if (display_mode == DISPLAY_THUMBNAILS) {
-				item_list->set_item_icon(-1, folder_thumbnail);
+				item_list->set_item_icon(-1, bundle ? file_thumbnail : folder_thumbnail);
 			} else {
-				item_list->set_item_icon(-1, theme_cache.folder);
+				item_list->set_item_icon(-1, bundle ? theme_cache.file : theme_cache.folder);
 			}
 
 			Dictionary d;

editor/gui/editor_file_dialog.h

@@ -185,6 +185,7 @@ private:
 		Ref<Texture2D> filter_box;
 		Ref<Texture2D> file_sort_button;
 
+		Ref<Texture2D> file;
 		Ref<Texture2D> folder;
 		Color folder_icon_color;
 

scene/gui/file_dialog.cpp

@@ -882,9 +882,9 @@ void FileDialog::update_file_list() {
 
 	for (const DirInfo &info : filtered_dirs) {
 		if (display_mode == DISPLAY_THUMBNAILS) {
-			file_list->add_item(info.name, theme_cache.folder_thumbnail);
+			file_list->add_item(info.name, info.bundle ? theme_cache.file_thumbnail : theme_cache.folder_thumbnail);
 		} else {
-			file_list->add_item(info.name, theme_cache.folder);
+			file_list->add_item(info.name, info.bundle ? theme_cache.file : theme_cache.folder);
 		}
 		file_list->set_item_icon_modulate(-1, theme_cache.folder_icon_color);