fix(anvil): Return transaction hash in ots_getTransactionBySenderAndNonce

[sealer3]

Motivation

Anvil currently returns a transaction object from ots_getTransactionBySenderAndNonce, but both the Otterscan execution specs (https://otterscan.github.io/execution-apis/api-documentation/) and the Foundry Book itself (https://book.getfoundry.sh/reference/anvil/) say it should return the transaction hash. Users can't navigate by sender nonce in Anvil-backed Otterscan instances because if this mistake.

Solution

Simply return the transaction hash rather than the complete transaction object.

Fixes #7740

First-time contributing feedback

I wasn't aware of some extra requirements to run the tests, namely:

Setup:

• Install gcc
• Install make
• Install solc
• Install libopenssl-dev

And for formatting:

rustup toolchain install nightly

It would be helpful if these instructions were added to or linked from the contributing guidelines.

Also, there were some git commit related tests that always failed when running: cmd::clone::tests::test_clone_single_file_contract failed with called Result::unwrap()on anErr value: Project init error: failed to commit (code=Some(128), stdout="", stderr="Author identity unknown\n\n*** Please tell me who you are.\n\nRun\n\n git config --global user.email \"you@example.com\"\n git config --global user.name \"Your Name\"\n\nto set your account's default identity.\nOmit --global to set the identity only in this repository.\n\nfatal: unable to auto-detect email address (got 'username@rustup.(none)')")

[DaniPopes]

@mattsse

[onbjerg]

LGTM when tests pass

Regarding the first time contributor feedback, you should have the formatter installed already by installing Rust via rustup.rs.

You should not need solc; Forge should automatically download that for you. You should not need make, we don't use it, so it shouldn't be required