optimize membership proof verification cost in evm (#1012)

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## Summary by CodeRabbit

## Release Notes

- **Chores**
- Various updates and modifications to Solidity smart contracts and
related modules.

- **Documentation**
  - Updated documentation for the `CometblsHelp` library.

- **Tests**
- Introduced a new function `testClientStateExistEthAbi` within the
`ICS23Test` contract.

- **Revert**
- Reverted changes to the `CometblsClientV2` constructor arguments in
the `evm.nix` file.
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