webstreams: narrow ReadableStreamBYOBRequest.view to Uint8Array

[vedparkasharya]

ReadableStreamBYOBRequest.view is always constructed as a Uint8Array,
and the specification will be updated to enforce this.

Refs: whatwg/streams#1367
Fixes: #62952

[gurgunday]

Thanks, but duplicate of #62958

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.66%. Comparing base (c202696) to head (84e6dec).
⚠️ Report is 7 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #62970      +/-   ##
==========================================
- Coverage   89.66%   89.66%   -0.01%     
==========================================
  Files         706      706              
  Lines      219416   219416              
  Branches    42073    42080       +7     
==========================================
- Hits       196738   196732       -6     
- Misses      14576    14600      +24     
+ Partials     8102     8084      -18     

Files with missing lines	Coverage Δ
lib/internal/webstreams/readablestream.js	98.54% <100.00%> (ø)

... and 43 files with indirect coverage changes

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[vedparkasharya]

Thanks @gurgunday for pointing that out! I see that #62958 already covers this exact change. I'll close this PR to avoid duplication. Appreciate the heads-up! 🙏