### 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
SIGNAL_UNWATCH(text_edit, "lines_edited_from");
	SIGNAL_UNWATCH(text_edit, "caret_changed");
	ERR_PRINT_OFF;
	CHECK_FALSE(text_edit->is_line_wrapped(-1));
	CHECK_FALSE(text_edit->is_line_wrapped(1));
	CHECK(text_edit->get_line_wrap_count(-1) == 0);
	CHECK(text_edit->get_line_wrap_count(1) == 0);
	CHECK(text_edit->get_line_wrap_index_at_column(-1, 0) == 0);
	CHECK(text_edit->get_line_wrap_index_at_column(0, -1) == 0);
	CHECK(text_edit->get_line_wrap_index_at_column(1, 0) == 0);
	CHECK(text_edit->get_line_wrap_index_at_column(0, 10000) == 0);
	CHECK(text_edit->get_line_wrapped_text(-1).size() == 0);
	CHECK(text_edit->get_line_wrapped_text(1).size() == 0);
	ERR_PRINT_ON;
	memdelete(text_edit);
}
TEST_CASE("[SceneTree][TextEdit] viewport") {
	TextEdit *text_edit = memnew(TextEdit);
	SceneTree::get_singleton()->get_root()->add_child(text_edit);
	
	text_edit->set_size(Size2(800, 600));
	for (int i = 0; i < 50; i++) {
		text_edit->insert_line_at(0, "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec vasius mattis leo, sed porta ex lacinia bibendum. Nunc bibendum pellentesque.");
	}
	MessageQueue::get_singleton()->flush();
	const int visible_lines = text_edit->get_visible_line_count();
	const int total_visible_lines = text_edit->get_total_visible_line_count();
	CHECK(total_visible_lines == 51);
	
	CHECK(text_edit->get_first_visible_line() == 0);