chore(ci): switch benchmark fill from evmone to geth

[spencer-tb]

🗒️ Description

Summary

Switches the benchmark test filler from evmone to geth in CI and tox config:

• Updates .github/configs/evm.yaml benchmark entry: evmone to geth
• Updates tox.ini benchmark testenv default: evmone-t8n to evm
• Adds build caching to the geth evm CI action (matching evmone's caching pattern)

Why?

Geth will eventually support --opcode.count (ethereum/go-ethereum#33800) and the EELS stream mode wiring is in place (#2170), giving geth feature parity with evmone for benchmark filling.

Switching to geth enables:

• Benchmark filling for Amsterdam (BALs / EIP-7928), which evmone does not yet support
• Using a single filler client across all forks (Prague, Osaka, Amsterdam)

🔗 Related Issues or PRs

Requires:

• ethereum/go-ethereum#33800, geth --opcode.count and receipt logs fix
• #2170, EELS stream-mode opcode count wiring for geth

✅ Checklist

• All: Ran fast tox checks to avoid unnecessary CI fails, see also Code Standards and Enabling Pre-commit Checks:

  uvx tox -e static

• All: PR title adheres to the repo standard - it will be used as the squash commit message and should start type(scope):.
• All: Considered updating the online docs in the ./docs/ directory.
• All: Set appropriate labels for the changes (only maintainers can apply labels).

Cute Animal Picture

[spencer-tb]

CI should pass once the Geth PR is merged!

[fselmo]

why loadgroup in particular? just curious

[spencer-tb]

I don't know how this snuck in there at all, this is duplicating [testenv:benchmark-gas-values]. Removing it all together. Thanks.

[marioevz]

We also need to set supports_opcode_count class var to True in GethTransitionTool.

[spencer-tb]

We also need to set supports_opcode_count class var to True in GethTransitionTool.

This should be added in #2170. Thanks.