3DTilesets do not work after viewer is recreated

[Kai-W]

After the Viewer is recreated e.g because a readOnly Prop is updated the 3DTileset are no longer working.

https://codesandbox.io/p/devbox/elastic-thunder-wvx2n3?file=%2Fsrc%2FApp.tsx%3A45%2C11-45%2C68

In the example cesium and the 3D Tileset is loaded and after 2 seconds the Base Layer changes. The viewer gets recreated but the Tilesets don't get updated to the changed viewer