watch: fix --env-file-if-exists crashing on linux if the file is missing

[efekrskl]

Fixes #57040

--env-file-if-exists combined with --watch seems to crash in if the .env file is missing (in Linux), this PR aims to fix that.

[codecov]

Codecov Report

❌ Patch coverage is 96.29630% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 89.66%. Comparing base (4f13746) to head (7feebe6).
⚠️ Report is 165 commits behind head on main.

Files with missing lines	Patch %	Lines
lib/internal/fs/recursive_watch.js	88.88%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #61870      +/-   ##
==========================================
- Coverage   89.72%   89.66%   -0.06%     
==========================================
  Files         675      676       +1     
  Lines      204806   206347    +1541     
  Branches    39355    39534     +179     
==========================================
+ Hits       183761   185021    +1260     
- Misses      13330    13458     +128     
- Partials     7715     7868     +153     

Files with missing lines	Coverage Δ
lib/fs.js	98.19% <100.00%> (+<0.01%)	⬆️
lib/internal/fs/watchers.js	88.03% <100.00%> (+0.73%)	⬆️
lib/internal/watch_mode/files_watcher.js	90.69% <100.00%> (+0.08%)	⬆️
lib/internal/fs/recursive_watch.js	85.27% <88.88%> (+0.36%)	⬆️

... and 181 files with indirect coverage changes

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[efekrskl]

@anonrig I've addressed all comments. I've also documented the change in fs.watch options and added some tests, I'm guessing this would be required as it is public facing.

Also, thanks a lot for the quick and detailed feedback!

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/71647/