### Godot version

v4.0.stable.official [92bee43ad]

### System information

Windows 10, 64bit

### Issue description

When change `ItemList`‘s icon_scale with code, itemlist not update:
![GIF](https://user-images.githubusercontent.com/35988767/222378909-ff9828aa-6714-478a-abbe-55477f28d85d.gif)

And force call `queue_redraw()`, icon size was udpate, but item border not.
![GIF](https://user-images.githubusercontent.com/35988767/222379478-832c7668-5182-4e1e-bfdb-cc137c19f77a.gif)

And if resize window, itemlist update correct.
![GIF](https://user-images.githubusercontent.com/35988767/222381049-3a45383d-9a40-4598-b64d-ec10d22754d7.gif)


### Steps to reproduce

/

### Minimal reproduction project

[ItemListTest.zip](https://github.com/godotengine/godot/files/10869385/ItemListTest.zip)

text_ofs.x = size.width - width;
							items.write[i].text_buf->set_alignment(HORIZONTAL_ALIGNMENT_RIGHT);
						} else {
							items.write[i].text_buf->set_alignment(HORIZONTAL_ALIGNMENT_LEFT);
						}
						if (theme_cache.font_outline_size > 0 && theme_cache.font_outline_color.a > 0) {
							items[i].text_buf->draw_outline(get_canvas_item(), text_ofs, theme_cache.font_outline_size, theme_cache.font_outline_color);
						}
						if (width - text_ofs.x > 0) {
							items[i].text_buf->draw(get_canvas_item(), text_ofs, txt_modulate);
						}
					}
				}
				if (select_mode == SELECT_MULTI && i == current) {
					Rect2 r = rcache;
					r.position += base_ofs;
					r.position.y -= theme_cache.v_separation / 2;
					r.size.y += theme_cache.v_separation;
					r.position.x -= theme_cache.h_separation / 2;
					r.size.x += theme_cache.h_separation;
					if (rtl) {
						r.position.x = size.width - r.position.x - r.size.x;
					}
					draw_style_box(cursor, r);
				}
			}
		} break;
	}
}
void ItemList::_check_shape_changed() {