Closes L2-600

Checklist

Provide automatic testing.

What

Add a test to verify that endpoint of ethereum JSON-RPC behave as expected on alias addresses.

Why

We want to ensure that we remain compatible with the tooling and that, if we change the behaviour in the future we have test to cover it.

How

Add a new tezt test that verify the behaviour of the RPCs

Manually testing the MR

dune exec etherlink/tezt/tests/main.exe -- --file tezosx.ml --verbose alias