Rework OpEthApi type

[emhane]

Describe the feature

OpEthApi should wrap EthApiInner<...>, just like EthApi struct does, instead of the generic Eth. Calling Eth::some_trait_method in implementation of EthApiServer helper traits is bug prone, since any default trait method overrides for OpEthApi, won't be considered if called inside scope of Eth::some_trait_method.

Additional context

No response

[mvares]

@emhane, OpEthApi would need to add generics to all that implement it.

[emhane]

yeah that's right @mvares

[emhane]

for OP I can use FullNodeComponents though to unify the generics Provider, Pool, Evm, we just didn't make that change for EthApi because it would require a lot of work fixing existing tests

[mvares]

right… thanks for explanation