### 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 caret_type;
}
void TextEdit::set_caret_blink_enabled(const bool p_enabled) {
	if (caret_blink_enabled == p_enabled) {
		return;
	}
	caret_blink_enabled = p_enabled;
	if (has_focus()) {
		if (p_enabled) {
			caret_blink_timer->start();
		} else {
			caret_blink_timer->stop();
		}
	}
	draw_caret = true;
}
bool TextEdit::is_caret_blink_enabled() const {
	return caret_blink_enabled;
}
float TextEdit::get_caret_blink_interval() const {
	return caret_blink_timer->get_wait_time();
}
void TextEdit::set_caret_blink_interval(const float p_interval) {
	ERR_FAIL_COND(p_interval <= 0);
	caret_blink_timer->set_wait_time(p_interval);
}
void TextEdit::set_draw_caret_when_editable_disabled(bool p_enable) {