This commit consolidates improvements from 8 community PRs with the ai-bot label:

- fix: correct debug log for blob gas fields in blockchaintest (#3291)
  Split blob_excess_gas_and_price into separate debug outputs for clarity

- perf(state): remove redundant clones in account_info.rs (#3287)
  Eliminate unnecessary clone operations in test code

- docs: fix duplicate word in MIGRATION_GUIDE.md (#3209)
  Remove duplicate "allows" in PrecompileError documentation

- fix: return G2NotInSubgroup for G2 subgroup check failure (#3179)
  Correct error type from G1NotInSubgroup to G2NotInSubgroup in BLS12-381

- refactor: reuse bound tx and remove redundant context.tx() calls (#3176)
  Optimize validation by reusing transaction binding

- docs: fix incorrect reth references in blockchain.rs comments (#3169)
  Update comments to use correct terminology instead of "reth"

- perf: use lazy defaults for env vars in burntpix benchmark (#3071)
  Replace unwrap_or with unwrap_or_else to avoid unnecessary allocations

All changes have been tested with cargo check and cargo test.