### 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
ERR_FAIL_INDEX(p_line, text.size());
	ERR_FAIL_COND(p_wrap_index < 0);
	ERR_FAIL_COND(p_wrap_index > get_line_wrap_count(p_line));
	Point2i next_line = get_next_visible_line_index_offset_from(p_line, p_wrap_index, -get_visible_line_count() - 1);
	int first_line = p_line - next_line.x + 1;
	
	
	if (get_visible_line_count_in_range(0, p_line) < get_visible_line_count() + 1) {
		set_v_scroll(0);
		return;
	}
	set_v_scroll(Math::round(get_scroll_pos_for_line(first_line, next_line.y) + _get_visible_lines_offset()));
}
int TextEdit::get_last_full_visible_line() const {
	int first_vis_line = get_first_visible_line();
	int last_vis_line = 0;
	last_vis_line = first_vis_line + get_next_visible_line_index_offset_from(first_vis_line, first_visible_line_wrap_ofs, get_visible_line_count()).x - 1;
	last_vis_line = CLAMP(last_vis_line, 0, text.size() - 1);
	return last_vis_line;
}
int TextEdit::get_last_full_visible_line_wrap_index() const {