acceptance tests: add tests for Fusaka activating on L1

[geoknee]

We would like to define a:

• "l1-fusaka" kurtosis devnet which activates Fusaka at genesis.
• acceptance test wiring to run our "base" gate on this devnet, and also against a sysgo backend which has Fusaka active

[geoknee]

See e.g. #13871 for a pattern on how we did this previously (note the use of custom images for L1 and fork activation overrides).

[geoknee]

To get Fusaka activated on L1 in kurtosis devnet, we will likely need to update ethereum_package to a recent version https://github.com/ethpandaops/ethereum-package/releases. Looks like there is WIP towards this ethpandaops/optimism-package#398

[geoknee]

Via #17529