stream: use validateNumber for options.min

[ChocoChip0519]

This replaces the manual options.min type check in
ReadableStreamBYOBReader.read() with the shared validateNumber()
validator.

-    if (typeof min !== 'number')
-      throw new ERR_INVALID_ARG_TYPE('options.min', 'number', min);
+    validateNumber(min, 'options.min');

This preserves the existing error behavior while using the common validation
helper. It also adds coverage for non-number and valid numeric options.min values.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.31%. Comparing base (404b0cf) to head (5b2004a).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #65193      +/-   ##
==========================================
- Coverage   90.32%   90.31%   -0.02%     
==========================================
  Files         760      760              
  Lines      248525   248525              
  Branches    46894    46893       -1     
==========================================
- Hits       224488   224447      -41     
- Misses      15469    15511      +42     
+ Partials     8568     8567       -1     

Files with missing lines	Coverage Δ
lib/internal/webstreams/readablestream.js	98.19% <100.00%> (+0.02%)	⬆️

... and 37 files with indirect coverage changes

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