### Godot version

v4.0.beta.custom_build [13f0158]

### System information

Windows 10

### Issue description

When doing operations (`begin_complex_operation` and `end_complex_operation`) with multiple selections in TextEdit, some of these selections don't revert upon undo. This behavior is affects some of script editor's operations, like duplicate selection and delete lines.

### Steps to reproduce

Open script editor, make multiple selections. Keep in mind what you have selected. Do duplicate selection (ctrl+shift+D). Undo (ctrl+Z). Compare the result to what you remember.

### Minimal reproduction project

N/A
if (!can_drag_minimap) {
		return;
	}
	int control_height = _get_control_height();
	int scroll_height = v_scroll->get_max() * (minimap_char_size.y + minimap_line_spacing);
	if (control_height > scroll_height) {
		control_height = scroll_height;
	}
	Point2 mp = get_local_mouse_pos();
	double diff = (mp.y - minimap_scroll_click_pos) / control_height;
	v_scroll->set_as_ratio(minimap_scroll_ratio + diff);
}
void TextEdit::_update_gutter_width() {
	gutters_width = 0;
	for (int i = 0; i < gutters.size(); i++) {
		if (gutters[i].draw) {
			gutters_width += gutters[i].width;
		}
	}
	if (gutters_width > 0) {
		gutter_padding = 2;
	}
	queue_redraw();
}
Dictionary TextEdit::_get_line_syntax_highlighting(int p_line) {