chore(tests): replace stale TODO docstrings in revert_opcode_in_init

[shubham5080]

Description

Replaces the leftover machine-port TODO revertOpcodeInInit followed by OOG placeholders in test_revert_opcode_in_init with docstrings that describe what the test actually verifies: REVERT in create-tx initcode discards the account (ops after REVERT never run) and the sender nonce advances.

The EIP-8037 gas bump (@manually-enhanced) was already done in #2901; Cancun/Amsterdam fill was already green. This is docstring-only cleanup.

Verified:

uv run fill tests/ported_static/stRevertTest/test_revert_opcode_in_init.py --fork=Cancun -q --clean
uv run fill tests/ported_static/stRevertTest/test_revert_opcode_in_init.py --fork=Amsterdam -q --clean
just static

Related Issues or PRs

N/A.

Checklist

• Ran fast static checks: just static
• PR title has the form <type>(<area>): <title>

Cute Animal Picture

[shubham5080]

Folded into #3606 per review feedback — closing this one.