### Godot version

4.0.beta9

### System information

Linux x86_64

### Issue description

The default Next Script / Previous Script shortcuts insert angle brackets into code when switching scripts.
Presumably this affects all "modifier + printable character" shortcuts.

Workaround for next/prev script: change shortcuts to ctrl-pgup and ctrl-pgdn

### Steps to reproduce

Editor Settings > Shortcuts > ensure that Next Script / Previous Script are set to defaults.
Open any script in the script editor.
Press ctrl-shift-comma or ctrl-shift-period.

### Minimal reproduction project

N/A
const int child_count = tab_container->get_tab_count();
	for (int i = 0; i < child_count; i++) {
		if (Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(i))) {
			return true;
		}
	}
	return false;
}
void ScriptEditor::_prepare_file_menu() {
	PopupMenu *menu = file_menu->get_popup();
	const bool current_is_doc = _get_current_editor() == nullptr;
	menu->set_item_disabled(menu->get_item_index(FILE_REOPEN_CLOSED), previous_scripts.is_empty());
	menu->set_item_disabled(menu->get_item_index(FILE_SAVE), current_is_doc);
	menu->set_item_disabled(menu->get_item_index(FILE_SAVE_AS), current_is_doc);
	menu->set_item_disabled(menu->get_item_index(FILE_SAVE_ALL), !_has_script_tab());
	menu->set_item_disabled(menu->get_item_index(FILE_TOOL_RELOAD_SOFT), current_is_doc);
	menu->set_item_disabled(menu->get_item_index(FILE_COPY_PATH), current_is_doc);
	menu->set_item_disabled(menu->get_item_index(SHOW_IN_FILE_SYSTEM), current_is_doc);
	menu->set_item_disabled(menu->get_item_index(WINDOW_PREV), history_pos <= 0);
	menu->set_item_disabled(menu->get_item_index(WINDOW_NEXT), history_pos >= history.size() - 1);
	menu->set_item_disabled(menu->get_item_index(FILE_CLOSE), tab_container->get_tab_count() < 1);
	menu->set_item_disabled(menu->get_item_index(CLOSE_ALL), tab_container->get_tab_count() < 1);
	menu->set_item_disabled(menu->get_item_index(CLOSE_OTHER_TABS), tab_container->get_tab_count() <= 1);
	menu->set_item_disabled(menu->get_item_index(CLOSE_DOCS), !_has_docs_tab());
	menu->set_item_disabled(menu->get_item_index(FILE_RUN), current_is_doc);
}
void ScriptEditor::_tab_changed(int p_which) {
	ensure_select_current();
}
void ScriptEditor::_notification(int p_what) {