Allow changing supported networks/chains

[JaegarSarauer]

Hello, I'm looking to change out the supported networks used to initialize the RainbowKitProvider so that I can support different networks with the chainModal UI on different pages of my app.

Right now, the docs don't mention a way to enable or disable chains for the RainbowKit chainModal. I have tried registering all chains I need with wagmi, then supplying a subset of those chains to RainbowKitProvider, this just breaks the modal.

Example:
my-app.com/page/1 supports chains Mainnet:

While my-app.com/page/2 support chains Polygon:

It also appears that I cannot supply 0 supported chains to RainbowKitProvider. I could use 0 supported chains as an alternative and let the modal show this message if it were possible: