This PR fixes the tsdocs formatting on the TldrawUi component so that
they appear on the docs site. Very similar to
https://github.com/tldraw/tldraw/pull/1706
### Change Type
- [x] `documentation` — Changes to the documentation only[^2]
[^1]: publishes a `patch` release, for devDependencies use `internal`
[^2]: will not publish a new version
### Test Plan
1. Go to `/gen/ui/TldrawUiProps`
2. Make sure that there are descriptions for all parameters.
- [ ] Unit Tests
- [ ] End to end tests
### Release Notes
- Docs: Show some docs missing from TldrawUi component.
d314c1ab01