### 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
text_edit->set_line_as_center_visible(visible_lines + (visible_lines / 2) + 5, 1);
	MessageQueue::get_singleton()->flush();
	CHECK(text_edit->get_first_visible_line() == visible_lines + (visible_lines / 2));
	CHECK(text_edit->get_v_scroll() == (visible_lines * 3));
	CHECK(text_edit->get_last_full_visible_line() == (visible_lines * 2) - 1);
	CHECK(text_edit->get_last_full_visible_line_wrap_index() == 1);
	
	int line_count = text_edit->get_line_count();
	text_edit->set_scroll_past_end_of_file_enabled(true);
	MessageQueue::get_singleton()->flush();
	text_edit->set_line_as_center_visible(line_count - 1);
	MessageQueue::get_singleton()->flush();
	CHECK(text_edit->get_first_visible_line() == (visible_lines * 2) + 3);
	CHECK(text_edit->get_v_scroll() == (visible_lines * 4) + 6);
	CHECK(text_edit->get_last_full_visible_line() == (visible_lines * 2) + 8);
	CHECK(text_edit->get_last_full_visible_line_wrap_index() == 0);
	text_edit->set_scroll_past_end_of_file_enabled(false);
	MessageQueue::get_singleton()->flush();
	CHECK(text_edit->get_first_visible_line() == (visible_lines * 2) + 3);
	CHECK(text_edit->get_v_scroll() == (visible_lines * 4) - 4);
	CHECK(text_edit->get_last_full_visible_line() == (visible_lines * 2) + 8);
	CHECK(text_edit->get_last_full_visible_line_wrap_index() == 0);
	
	text_edit->set_line_wrapping_mode(TextEdit::LineWrappingMode::LINE_WRAPPING_NONE);
	MessageQueue::get_singleton()->flush();
	CHECK(text_edit->get_total_visible_line_count() == total_visible_lines);
	text_edit->set_line_as_first_visible(0);
	MessageQueue::get_singleton()->flush();
	CHECK(text_edit->get_first_visible_line() == 0);
	CHECK(text_edit->get_v_scroll() == 0);