### 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
Point2 mp = get_local_mouse_pos();
	int xmargin_end = get_size().width - theme_cache.style_normal->get_margin(SIDE_RIGHT);
	if (!dragging_minimap && (mp.x < xmargin_end - minimap_width || mp.y > xmargin_end)) {
		minimap_clicked = false;
		return;
	}
	minimap_clicked = true;
	dragging_minimap = true;
	int row = get_minimap_line_at_pos(mp);
	if (row >= get_first_visible_line() && (row < get_last_full_visible_line() || row >= (text.size() - 1))) {
		minimap_scroll_ratio = v_scroll->get_as_ratio();
		minimap_scroll_click_pos = mp.y;
		can_drag_minimap = true;
		return;
	}
	Point2i next_line = get_next_visible_line_index_offset_from(row, 0, -get_visible_line_count() / 2);
	int first_line = row - next_line.x + 1;
	double delta = get_scroll_pos_for_line(first_line, next_line.y) - get_v_scroll();
	if (delta < 0) {
		_scroll_up(-delta, true);
	} else {
		_scroll_down(delta, true);
	}
}
void TextEdit::_update_minimap_drag() {