assert: make myers_diff function more performant

[puskin94]

now that Myers diff has landed, I took the liberty to review the code I wrote to look for improvements that would squeeze some more performance out of the comparison mechanism

• simplified some logic
• reviewed loops and introduced more breaking points to make them run for less cycles
• reduced memory allocation using Int32Array

Refs: #54862

[codecov]

Codecov Report

Attention: Patch coverage is 82.85714% with 6 lines in your changes missing coverage. Please review.

Project coverage is 89.16%. Comparing base (6b3937a) to head (c364630).
Report is 11 commits behind head on main.

Files with missing lines	Patch %	Lines
lib/internal/assert/myers_diff.js	82.85%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #56303      +/-   ##
==========================================
- Coverage   89.17%   89.16%   -0.02%     
==========================================
  Files         662      662              
  Lines      191672   191685      +13     
  Branches    36884    36883       -1     
==========================================
- Hits       170922   170909      -13     
- Misses      13614    13635      +21     
- Partials     7136     7141       +5     

Files with missing lines	Coverage Δ
lib/internal/assert/myers_diff.js	89.38% <82.85%> (-0.68%)	⬇️

... and 36 files with indirect coverage changes

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/64418/

[marco-ippolito]

can you rebase? I think the failure is related to that

[BridgeAR]

@puskin94 can you please rebase and force push to the branch? :)

A merge commit can not be picked up by the tooling

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/64433/