Bug report template starter is broken

### Problem description:

The `bug-report-template-starter` doesn't work in recent react versions.

<img width="300" alt="Image" src="https://github.com/user-attachments/assets/9e516ca5-d171-4fe9-92a9-745f847921dc" />

### Relevant code:

https://githubbox.com/pmndrs/drei/tree/master/sandboxes/bug-report-template-starter

### Suggested solution:

Update to new create `createRoot()`
#2554 

