Revert "Use typed promises/resolvers for ReadableStream and related classes"

This reverts commit 4b6caa33.

Reason for revert: Lots of crash reports:
crbug.com/332153735
crbug.com/332046807

Original change's description:
> Use typed promises/resolvers for ReadableStream and related classes
>
> This converts IDL-exposed promises in ReadableStream,
> ReadableStreamBYOBReader, ReadableStreamDefaultReader, and
> ReadableStreamGenericReader to use typed ScriptPromiseResolver
> instead of StreamPromiseResolver and to return typed
> ScriptPromises.
>
> Bug: 329702363
> Change-Id: I94603a4ec7ffc9fa8d073d0746cfb6c1edae7109
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5373206


> Reviewed-by: Adam Rice <ricea@chromium.org>
> Commit-Queue: Nate Chapin <japhet@chromium.org>
> Reviewed-by: Nidhi Jaju <nidhijaju@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1280303}

Bug: 329702363
Change-Id: I9925ff950623f1db954590fa3b1d54fce6309119
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5405919
Commit-Queue: Nate Chapin <japhet@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#1280755}