fix: dev genesis hash

[frisitano]

Overview

This PR makes changes that allow for a scroll dev chain to be run. This is achieved via the following three modifications:

• Populate L1 fee contract storage slots used for L1 fee calculation in the dev genesis.
• Do not use the static DEV_GENESIS_HASH in the ScrollChainSpec and instead use new_unhashed when instantiating the header.
• Set the base fee to a static 100; previously it was defaulting to 0, which was resulting in an error downstream. A production solution will be provided in Implement the geth's CalcBaseFee formula  #210 but the current "hack" will unblock sequencer dependent workstreams.

[codspeed-hq]

CodSpeed Performance Report

Merging #196 will not alter performance

_{Comparing fix/dev-genesis-hash (c31fc47) with scroll (07059ec)}

Summary

✅ 77 untouched benchmarks

[greged93]

lgtm!