SDK abstractions should throw an error if chains in configuration are not covered by multiprovider

[nambrot]

#394 was fixed by using the intersection between chains in the configuration and the chains of the multiprovider.

There is an argument that this will be surprising to developers. In a world in which one uses an app-independent multiprovider (like infra does), imo it would be surprising to get a subset of the chains in the configuration. Instead, the abstractions could throw an error and force the developer to adjust the configuration if the subset is desired

[asaj]

I believe we've done this