Drop support for native Node Readable stream: require passing Node Web Streams (#1716)

Breaking change: all functions taking streams as inputs will now require passing Web Streams in Node.js . If given a native `stream.Readable` input, they will throw. The browser build is unaffected by this change.

Utils to convert from and to Web Streams in Node are available from v17,
see https://nodejs.org/api/stream.html#streamreadabletowebstreamreadable-options .
Previously, we automatically converted between Node native streams and custom, Web-like Readable streams.
This led to occasional issues.

.github/workflows/benchmark.yml

@@ -20,6 +20,8 @@ jobs:
           ref: main
           path: main
       - uses: actions/setup-node@v3
+        with:
+          node-version: '>=20.6.0'
 
       - name: Run pull request time benchmark
         run: cd pr && npm install && npm run --silent benchmark-time > benchmarks.txt && cat benchmarks.txt