async_hooks: use validateBoolean for trackPromises

[soulee-dev]

The trackPromises validation added in #61415 hand-rolls a check that validateBoolean() already performs — same error code, same expected type string, same argument order. This replaces it with the validator.

lib/async_hooks.js already imports validateString() and validateFunction() and uses them for type and fn, so this also makes the file internally consistent. With the last manual check gone, the ERR_INVALID_ARG_TYPE import is dropped as well.

No behavior change: validateBoolean() is wrapped in hideStackFrames(), so the thrown error is identical from a caller's perspective, including the top stack frame. The existing coverage in test/async-hooks/test-track-promises-validation.js already asserts this, so no new tests are added.

Refs: #61415

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.14%. Comparing base (0618e9f) to head (3ce515c).

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #64731      +/-   ##
==========================================
- Coverage   90.14%   90.14%   -0.01%     
==========================================
  Files         743      743              
  Lines      242408   242408              
  Branches    45656    45650       -6     
==========================================
- Hits       218520   218507      -13     
  Misses      15387    15387              
- Partials     8501     8514      +13     

Files with missing lines	Coverage Δ
lib/async_hooks.js	100.00% <100.00%> (ø)

... and 31 files with indirect coverage changes

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[soulee-dev]

@daeyeon Thanks for approving the CI run!

The only failing check is aarch64-linux: with shared boringssl on parallel/test-repl-function-definition-edge-case.

The same test-shared.yml workflow fails on main, with the same test and error (e.g. https://github.com/nodejs/node/actions/runs/30136256627).

make test passes locally on this branch. Could you re-trigger CI?