Restore browser-side configuration storage at least as an option

### Feature Idea

Apparently `--server-storage` is now the default, and there's no way to switch back to browser storage. Just registering that some of us don't think this is an improvement. How *many*, I don't know; I only know that I'm one of them.

My particular use case: I run ComfyUI (and lots of other software) in containers that intentionally have no write access to any persistent filesystem. Any configuration that gets stored in one of those containers will be lost in short order.

And anyway I *liked* the browser storage concept. A Web without server-side state of any kind would be a better Web.

### Existing Solutions

_No response_

### Other

_No response_