[Feature]: Add an option to remove snow
### What's the feature?

The current snow animation on the interface is visually appealing but can be distracting for some users. Additionally, it consumes CPU resources, which may affect performance, especially on lower-end devices.

Please implement an option in the preferences menu that allows users to enable or disable the snow animation.

Thank you for considering this request!

### Where would you like this feature?

The tldraw.com website

### Contact Details

_No response_

### Code of Conduct

- [x] I agree to follow this project's Code of Conduct