### 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
return v_scroll;
}
HScrollBar *TextEdit::get_h_scroll_bar() const {
	return h_scroll;
}
void TextEdit::set_v_scroll(double p_scroll) {
	v_scroll->set_value(p_scroll);
	int max_v_scroll = v_scroll->get_max() - v_scroll->get_page();
	if (p_scroll >= max_v_scroll - 1.0) {
		_scroll_moved(v_scroll->get_value());
	}
}
double TextEdit::get_v_scroll() const {
	return v_scroll->get_value();
}
void TextEdit::set_h_scroll(int p_scroll) {
	if (p_scroll < 0) {
		p_scroll = 0;
	}
	h_scroll->set_value(p_scroll);
}
int TextEdit::get_h_scroll() const {
	return h_scroll->get_value();
}
void TextEdit::set_v_scroll_speed(float p_speed) {
	
	ERR_FAIL_COND(p_speed < 1.0);
	v_scroll_speed = p_speed;
}
float TextEdit::get_v_scroll_speed() const {