stream: use validateBuffer for BYOB reader view

[greenheadHQ]

ReadableStreamBYOBReader.prototype.read() open-codes the check that validateBuffer performs, while ReadableStreamBYOBRequest.prototype.respondWithNewView() a few hundred lines above already calls validateBuffer(view, 'view') for the same argument. Both build ERR_INVALID_ARG_TYPE from the same name and type list, so the rejection is unchanged.

No new test: readable-byte-streams/general.any.js already covers read() with a non-view argument.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.29%. Comparing base (3e6cca0) to head (7002d14).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #65046      +/-   ##
==========================================
- Coverage   90.30%   90.29%   -0.01%     
==========================================
  Files         759      759              
  Lines      247612   247602      -10     
  Branches    46686    46681       -5     
==========================================
- Hits       223604   223579      -25     
- Misses      15460    15462       +2     
- Partials     8548     8561      +13     

Files with missing lines	Coverage Δ
lib/internal/webstreams/readablestream.js	98.16% <100.00%> (-0.01%)	⬇️

... and 24 files with indirect coverage changes

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[greenheadHQ]

The aarch64-darwin: with shared libraries failure is unrelated to this change. It is parallel/test-stream-pipeline-http2, which is listed as flaky in nodejs/reliability#1622. The same commit passes on every other platform, including x86_64-darwin, and the test does not touch web streams.