src: use simdutf for two-byte string utf8 conversion in utf8 value

[mertcanaltin]

latin-1 already used simdutf #61696,

I changed WriteUtf8V2 to simdutf for two-byte strings.

➜  node git:(mert/use-simdutf-for-two-byte-utf8) ✗ node-benchmark-compare ./result.csv
                                                confidence improvement accuracy (*)   (**)  (***)
util/utf8-value.js n=5000000 type='ascii'                      -0.11 %       ±2.64% ±3.69% ±5.18%
util/utf8-value.js n=5000000 type='mixed'              ***     49.60 %       ±1.90% ±2.67% ±3.78%
util/utf8-value.js n=5000000 type='three_bytes'        ***     31.10 %       ±2.42% ±3.34% ±4.60%
util/utf8-value.js n=5000000 type='two_bytes'          ***     42.75 %       ±1.42% ±1.94% ±2.66%

Be aware that when doing many comparisons the risk of a false-positive result increases.
In this case, there are 4 comparisons, you can thus expect the following amount of false-positive results:
  0.20 false positives, when considering a   5% risk acceptance (*, **, ***),
  0.04 false positives, when considering a   1% risk acceptance (**, ***),
  0.00 false positives, when considering a 0.1% risk acceptance (***)

[nodejs-github-bot]

Review requested:

• @nodejs/performance

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.32%. Comparing base (b2b7405) to head (0cb2a0b).
⚠️ Report is 102 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #62248      +/-   ##
==========================================
- Coverage   90.33%   90.32%   -0.02%     
==========================================
  Files         760      760              
  Lines      248523   248530       +7     
  Branches    46906    46892      -14     
==========================================
- Hits       224511   224481      -30     
- Misses      15451    15464      +13     
- Partials     8561     8585      +24     

Files with missing lines	Coverage Δ
src/util.cc	87.16% <100.00%> (+0.20%)	⬆️

... and 30 files with indirect coverage changes

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[lemire]

this look fine, see my comment.

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/72570/

[github-actions]

This pull request has been marked as stale due to 90 days of inactivity.
It will be automatically closed in 30 days if no further activity occurs. If this is still relevant, please leave a comment or update it to keep it open.

[github-actions]

Failed to start CI

- Validating Jenkins credentials
✔  Jenkins credentials valid
- Querying data for job/node-test-pull-request/72570/
SyntaxError: Unexpected token '<', ..."    
  https://github.com/nodejs/node/actions/runs/31913056571