Re: [whatwg/streams] Fix cancelPromise in ReadableStreamTee being resolved twice (#1112)

We're finding all sorts of unexpected errors today! 😁 
```
   transform-streams/patched-global.any.html

  √ TransformStream constructor should not call setters for highWaterMark or size
  × test harness threw unexpected error
    Test named 'TransformStream constructor should not call setters for highWaterMark or size' specified 1 'cleanup' function, and 1 failed.
    null
```
Looks like [this cleanup function](https://github.com/web-platform-tests/wpt/blob/29c9c814031e169d533a7226fa5b48f8573b805a/streams/transform-streams/patched-global.any.js#L18-L21) is failing because we forgot to add `configurable: true` on the patched properties. I'll piggy-back it onto the WPT PR. 😛 

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Received on Friday, 19 March 2021 19:10:58 UTC