### 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
#ifndef TEST_TEXT_EDIT_H
#define TEST_TEXT_EDIT_H
#include "scene/gui/text_edit.h"
#include "tests/test_macros.h"
namespace TestTextEdit {
TEST_CASE("[SceneTree][TextEdit] text entry") {
	SceneTree::get_singleton()->get_root()->set_physics_object_picking(false);
	TextEdit *text_edit = memnew(TextEdit);
	SceneTree::get_singleton()->get_root()->add_child(text_edit);
	text_edit->grab_focus();
	Array empty_signal_args;
	empty_signal_args.push_back(Array());