tls client 'session' event

[pfgithub]

What does this PR do?

Implements the 'session' event for tls

TODO:

• We shouldn't bother with serializing the session and sending it to JS unless listenerCount('session') > 0. Can this be checked from zig?
• The test passes despite 'secureProtocol' being ignored, and if secureProtocol is not specified in node, it never emits 'session'. So something is wrong.

[robobun]

^{Updated 9:34 PM PT - Jun 23rd, 2025}

❌ @pfgithub, your commit 9350959 has 4 failures in Build #19171:

• test/napi/napi.test.ts - 1 failing on 🐧 12 x64-baseline
• test/bake/dev/stress.test.ts - 1 failing on 🐧 12 x64-baseline
• test/js/node/test/parallel/test-tls-secure-session.js - SIGABRT on 🐧 12 x64-asan
• test/js/node/test/parallel/test-tls-client-resume.js - SIGABRT on 🐧 12 x64-asan

---

🧪   To try this PR locally:

bunx bun-pr 20197

That installs a local version of the PR into your bun-20197 executable, so you can run:

bun-20197 --bun

[Jarred-Sumner]

Closing this since #36475 (node:tls: return the ticket-bearing session from getSession()/getTLSTicket() on TLS 1.3) merged and covers the same ground. Thank you @pfgithub for the PR — if there's a piece of this that #36475 didn't pick up, please say so and we'll take another look.

(This comment was written by Claude, on behalf of the Bun team.)