lib: narrow ReadableStreamBYOBRequest.view return type to Uint8Array

Follow WHATWG streams spec update: whatwg/streams#1367

ReadableStreamBYOBRequest.view is always constructed as a Uint8Array.

This changes the documented return type from ArrayBufferView to
Uint8Array per the updated spec.

Fixes: #62952

Signed-off-by: Jah-yee <166608075+Jah-yee@users.noreply.github.com>
PR-URL: #63017
Reviewed-By: Mattias Buelens <mattias@buelens.com>
Reviewed-By: Jason Zhang <xzha4350@gmail.com>

Author: Jah-yee

lib/internal/webstreams/readablestream.js

@@ -665,7 +665,7 @@ class ReadableStreamBYOBRequest {
 
   /**
    * @readonly
-   * @type {ArrayBufferView}
+   * @type {Uint8Array}
    */
   get view() {
     if (!isReadableStreamBYOBRequest(this))