fix: handle pre-merge PoA blocks for Ethereum goerli

[antazoey]

What I did

fixes: #36

How I did it

Add middleware if 0th block needs it rather than latest.

How to verify it

See test.

Checklist

• [ ] Passes all linting checks (pre-commit and CI jobs)
• [ ] New test cases have been added and are passing
• [ ] Documentation has been updated
• [ ] PR title follows Conventional Commit standard (will be automatically included in the changelog)

[antazoey]

@helloibis this explains why goerli-fork tests fail in Hardhat and Foundry.

[antazoey]

see https://github.com/ApeWorX/ape-alchemy/pull/38