Only recalculate storage roots once per block

[benaadams]

Resolves #2324

Changes

• Only recalculate root hashes for storages once per block than for each tx; if multiple tx use the same contract it is wasteful to recalcuate them multiple times.
• Also means can recalucate all the storage roots in parallel at the end.
• Addresses some long standing TODOs and issue Only recalculate storage roots on block commit #2324

Now 1.5% of block processing when running in Parallel

Types of changes

What types of changes does your code introduce?

• Optimization

Testing

Requires testing

• No

[benaadams]

Hive tests pass https://github.com/NethermindEth/nethermind/actions/runs/9148502578