test: enable 3 already-passing Node compat tests

[nathanwhitbot]

Summary

Enables 3 Node.js compat tests that already pass on main without any code changes. No production code touched — just tests/node_compat/config.jsonc entries.

• parallel/test-http2-misbehaving-multiplex.js
• parallel/test-http2-server-http1-client.js
• parallel/test-tls-socket-close.js

Test plan

• Each test verified passing 3/3 times via the node_compat test runner
• Full cargo test --test node_compat run on Linux confirms no regressions (only pre-existing flaky failures)

[nathanwhitbot]

Force-pushed 3ed71f30c — branch was stacked on top of #33653's commits as a base instead of upstream/main, so the diff was including all of #33653's content (cluster tests, http tests, etc.). Reset to upstream/main and cherry-picked just the 3-test commit. Diff is now 1 file, +3 -0.

[nathanwhitbot]

Self-review of `3ed71f30c` (post-cleanup):

Pure config-only test enrollment, no production code. All 3 entries alphabetically positioned correctly:

Test	Prev	Next
`test-http2-misbehaving-multiplex.js`	`test-http2-methods.js`	`test-http2-misc-util.js`
`test-http2-server-http1-client.js`	`test-http2-server-errors.js`	`test-http2-server-rfc-9113-server.js`
`test-tls-socket-close.js`	`test-tls-socket-allow-half-open-option.js`	`test-tls-socket-constructor-alpn-options-parsing.js`

All three enabled with empty config (`{}`), so no per-platform gates or flaky markers. Holding to COMMENT until CI confirms.

[nathanwhitbot]

Single-commit, 3-line config-only change. No scope-creep. LGTM — hold for cross-platform CI per usual; if any of the http2/tls tests come back red on Windows or macOS, drop rather than gate.

[fibibot]

LGTM. Pure config-only enrollment, 3 entries:

• test-http2-misbehaving-multiplex.js — slotted between test-http2-methods and test-http2-misc-util (methods < misbehaving < misc). ✓
• test-http2-server-http1-client.js — between test-http2-server-errors and test-http2-server-rfc-9113-server (errors < http1-client < rfc-9113). ✓
• test-tls-socket-close.js — between test-tls-socket-allow-half-open-option and test-tls-socket-constructor-alpn-options-parsing (allow < close < constructor). ✓

CI fully green: 133 SUCCESS, 0 FAILURE, 2 SKIPPED. All test node_compat shards across 6 platforms × debug+release pass.