[Editor] Add `Open in Terminal` to the file system empty click

Was missing from clicking in the empty file list

editor/filesystem_dock.cpp

@@ -3325,6 +3325,7 @@ void FileSystemDock::_file_list_empty_clicked(const Vector2 &p_pos, MouseButton
 	file_list_popup->add_icon_item(get_editor_theme_icon(SNAME("TextFile")), TTR("New TextFile..."), FILE_NEW_TEXTFILE);
 	file_list_popup->add_separator();
 	file_list_popup->add_icon_shortcut(get_editor_theme_icon(SNAME("Filesystem")), ED_GET_SHORTCUT("filesystem_dock/show_in_explorer"), FILE_SHOW_IN_EXPLORER);
+	file_list_popup->add_icon_shortcut(get_editor_theme_icon(SNAME("Terminal")), ED_GET_SHORTCUT("filesystem_dock/open_in_terminal"), FILE_OPEN_IN_TERMINAL);
 
 	file_list_popup->set_position(files->get_screen_position() + p_pos);
 	file_list_popup->reset_size();