Optimize block range roots computation

[jpraynaud]

Content

This PR includes an optimization on the computation of the block range roots so that there is a limited accumulation of the computed root before they are stored in the database (in particular to avoid the error variable number must be between ?1 and ?32766 from SQLite).

Pre-submit checklist

• Branch
  • [x] Crates versions are updated (if relevant)
  • [x] Commit sequence broadly makes sense
  • [x] Key commits have useful messages
• PR
  • [x] No clippy warnings in the CI
  • [x] Self-reviewed the diff
  • [x] Useful pull request description
  • [x] Reviewer requested

Issue(s)

Relates to #1633

[github-actions[bot]]

Test Results

    3 files  ±0     43 suites  ±0   8m 15s :stopwatch: -18s   976 tests ±0    976 :white_check_mark: ±0  0 :zzz: ±0  0 :x: ±0  1 070 runs  ±0  1 070 :white_check_mark: ±0  0 :zzz: ±0  0 :x: ±0 

Results for commit 4c28f6c0. ± Comparison against base commit 06733520.