execution/commitment: enchance MPT hashing hot-paths to reduce allocations#20796

Sahil-4555 wants to merge 7 commits intoerigontech:mainerigontech/erigon:mainfrom

Sahil-4555:opt/mpt-commitment-zero-allocSahil-4555/erigon:opt/mpt-commitment-zero-allocCopy head branch name to clipboard