fix(http2) altsvc + origin support

[cirospaciari]

What does this PR do?

Fix: #16330
Improve on http2-wrapper support. Context: #14958 (comment)

• Documentation or TypeScript types (it's okay to leave the rest blank in this case)
• Code changes

How did you verify your code works?

Tests

[robobun]

^{Updated 11:28 AM PT - Feb 19th, 2025}

❌ @cirospaciari, your commit e0d0f2b has 4 failures in Build #11840:

• test/js/bun/http/serve-body-leak.test.ts - 5 failing on 🐧 3.20 x64-baseline
• test/cli/install/bun-install-registry.test.ts - 1 failing on 🪟 2019 x64
• test/js/web/fetch/fetch.test.ts - 1 failing on 🍎 14 aarch64
• test/cli/create/create-jsx.test.ts - 8 failing on 🍎 14 aarch64
• test/cli/create/create-jsx.test.ts - 8 failing on 🍎 13 aarch64
• test/cli/create/create-jsx.test.ts - 8 failing on 🍎 14 x64
• test/cli/create/create-jsx.test.ts - 8 failing on 🍎 13 x64
• test/cli/create/create-jsx.test.ts - 4 failing on 🪟 2019 x64-baseline
• test/cli/create/create-jsx.test.ts - 4 failing on 🪟 2019 x64
• test/cli/create/create-jsx.test.ts - 8 failing on 🐧 20.04 aarch64
• test/cli/create/create-jsx.test.ts - 8 failing on 🐧 12 aarch64
• test/cli/create/create-jsx.test.ts - 8 failing on 🐧 24.04 aarch64
• test/cli/create/create-jsx.test.ts - 8 failing on 🐧 22.04 aarch64
• test/cli/create/create-jsx.test.ts - 8 failing on 🐧 3.20 aarch64
• test/cli/create/create-jsx.test.ts - 8 failing on 🐧 22.04 x64
• test/cli/create/create-jsx.test.ts - 8 failing on 🐧 24.04 x64
• test/cli/create/create-jsx.test.ts - 8 failing on 🐧 12 x64
• test/cli/create/create-jsx.test.ts - 8 failing on 🐧 20.04 x64
• test/cli/create/create-jsx.test.ts - 8 failing on 🐧 12 x64-baseline
• test/cli/create/create-jsx.test.ts - 8 failing on 🐧 22.04 x64-baseline
• test/cli/create/create-jsx.test.ts - 8 failing on 🐧 24.04 x64-baseline
• test/cli/create/create-jsx.test.ts - 8 failing on 🐧 20.04 x64-baseline
• test/cli/create/create-jsx.test.ts - 8 failing on 🐧 3.20 x64
• test/cli/create/create-jsx.test.ts - 8 failing on 🐧 3.20 x64-baseline

---

🧪   try this PR locally:

bunx bun-pr 17438