stream: construct correct prototype to transferred streams

[avivkeller]

Fixes#54603
Ref #50107

[anonrig]

ReflectConstruct is extremely slow.

[avivkeller]

I'm aware, is there another way to make this WPT compliant? We need a way to have the prototype of the transferred stream === the original prototype.

[avivkeller]

FWIW regarding speed, this has around a -20% on speed, so not good. Is there a reason we can't just return ReadableStream as is?

[MattiasBuelens]

Deno solves this by adding a special overload to their ReadableStream constructor, which essentially skips the regular steps. Maybe we should do something similar?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.22%. Comparing base (5116578) to head (fe71574).
Report is 20 commits behind head on main.

Additional details and impacted files

@@ Coverage Diff @@## main #55047 +/- ## ========================================== - Coverage 88.24% 88.22% -0.02%  ========================================== Files 652 652 Lines 183886 183867 -19 Branches 35855 35859 +4 ========================================== - Hits 162263 162221 -42 - Misses 14902 14919 +17 - Partials 6721 6727 +6 

Files with missing lines	Coverage Δ
lib/internal/webstreams/readablestream.js	98.31% <100.00%> (-0.01%)	⬇️
lib/internal/webstreams/transformstream.js	99.56% <100.00%> (-0.01%)	⬇️
lib/internal/webstreams/writablestream.js	99.85% <100.00%> (-0.01%)	⬇️

... and 36 files with indirect coverage changes

[avivkeller]

Superseded by #55067