zkvm: allow using entire gas in bytecode attack

[jsign]

This PR proposes a way to fill the bytecode attack, solving two main problems:

• Creating so many 24KiB contracts with 36M gas limit takes a lot of blocks, which bloats the generated fixture in size and generation time.
• Even if so many blocks in the fixture aren't a problem, all the ~300MiB of code appears in the postState, which also bloats the fixture. (This PR now uses a new feature introduced in Add optional field to exclude including postState #1578)

Results:

• I tested in Geth, and it runs exactly as expected.
• Filling this test on my machine with --block-gas-limit 36M
  • Only two blocks are needed in the fixture.
  • Block 1 only has a single tx creating all contracts.
  • Block 2 has the actual attack.
• Takes 2 mins to fill the test, which sounds quite fast considering it creates 300MiB of contracts.
• The fixture json file size is ~35KiB, so very small as wanted.

Fill command: uv run fill --from=Cancun --until=Cancun -m "zkevm and blockchain_test" --block-gas-limit 36000000 -k test_worst_bytecode

[marioevz]

LGTM, hope that the rebase helps with the CI timeout :)