Rewrite internal Web Streams to use less memory

[paperclover]

This reverts commit 68ee830, which revives PR #16349

Investigating if this PR passes after dylans branch merges.

[robobun]

^{Updated 5:02 PM PT - Jan 31st, 2025}

❌ @Jarred-Sumner, your commit c1f9ec4 has 4 failures in Build #10942:

• test/js/bun/util/filesink.test.ts - timeout on 🪟 2019 x64-baseline
• test/js/bun/util/filesink.test.ts - timeout on 🪟 2019 x64
• test/js/node/test/parallel/test-fs-promises-writefile.js - code 1 on 🪟 2019 x64-baseline
• test/js/web/fetch/fetch.stream.test.ts - 7 failing on 🪟 2019 x64
• test/js/web/fetch/fetch.stream.test.ts - 7 failing on 🍎 14 aarch64
• test/js/web/fetch/fetch.stream.test.ts - 7 failing on 🪟 2019 x64-baseline
• test/js/web/fetch/fetch.stream.test.ts - 7 failing on 🍎 13 aarch64
• test/js/web/fetch/fetch.stream.test.ts - 7 failing on 🐧 12 aarch64
• test/js/web/fetch/fetch.stream.test.ts - 7 failing on 🐧 22.04 aarch64
• test/js/web/fetch/fetch.stream.test.ts - 7 failing on 🐧 20.04 aarch64
• test/js/web/fetch/fetch.stream.test.ts - 7 failing on 🐧 24.04 aarch64
• test/js/web/fetch/fetch.stream.test.ts - 7 failing on 🐧 3.20 aarch64
• test/js/web/fetch/fetch.stream.test.ts - 7 failing on 🐧 20.04 x64
• test/js/web/fetch/fetch.stream.test.ts - 7 failing on 🐧 24.04 x64
• test/js/web/fetch/fetch.stream.test.ts - 7 failing on 🐧 12 x64
• test/js/web/fetch/fetch.stream.test.ts - 7 failing on 🐧 22.04 x64
• test/js/web/fetch/fetch.stream.test.ts - 7 failing on 🐧 20.04 x64-baseline
• test/js/web/fetch/fetch.stream.test.ts - 7 failing on 🐧 12 x64-baseline
• test/js/web/fetch/fetch.stream.test.ts - 7 failing on 🐧 24.04 x64-baseline
• test/js/web/fetch/fetch.stream.test.ts - 7 failing on 🐧 22.04 x64-baseline
• test/js/web/fetch/fetch.stream.test.ts - 7 failing on 🍎 13 x64
• test/js/web/fetch/fetch.stream.test.ts - 7 failing on 🍎 14 x64
• test/js/web/fetch/fetch.stream.test.ts - 7 failing on 🐧 3.20 x64-baseline
• test/js/web/fetch/fetch.stream.test.ts - 7 failing on 🐧 3.20 x64
• test/cli/install/bun-install-registry.test.ts - 1 failing on 🪟 2019 x64

---

🧪   try this PR locally:

bunx bun-pr 16860