[SDK] Provider is client side but uses node functionalities

[Kzoeps]

Which area(s) of Hypercerts are affected? (leave empty if unsure)

SDK

To Reproduce

1. Setup the SDK using @hypercerts/sdk-react
2. Wrap the root component with the Provider from createAtProtoReact
3. Provider needs to be client side but if client side can't access the private keys.

Describe the Bug

1. If we wrap the provider to be a client side component, node functionality thats used in the sdk is not available.
2. If we make the provider to be a server side component then react/next complains that it should be a client component

Expected Behavior

The Provider should work while being a client side component.