Export a reference API error if there is a chain id mismatch

[DavidNix]

Right now we log a warning, but I think it should be an error that's exported (like we do with timeouts and bad status codes).

If there is a mismatch on chain id, we can't trust the data at all.

[jonathanpberger]

@DavidNix what's the deal w/ this ticket?

[DavidNix]

When we export the height metrics, if there's a chain id mismatch, we only log a warning. This should be an error we can report on if we want.

E.g. I want to use rest.cosmoshub.com for osmosis. The chain ids will be different so we are looking at heights for the wrong chain.