enable eslint on wd-test files

[anonrig]

No description provided.

[ask-bonk]

I'm Bonk, and I've done a quick review of your PR.

This PR enables ESLint on .wd-test JS files by integrating lint_test into wd_test.bzl, adding workerd-specific globals, and fixing the resulting lint violations across ~80 files.

1. [MEDIUM] assert.deepEqual; is a no-op expression (property access, not a function call) -- the eslint-disable suppresses the symptom but leaves a likely pre-existing bug unaddressed.
2. [LOW] r2-test.js fall-through comments -- the // falls through comments are technically accurate (the code can fall through syntactically) but in practice the inner switch cases always return. Adding break statements would be more correct than endorsing the fall-throughs with comments.

The remaining changes (unused var prefixes, dead code removal, var→let, empty catch/loop bodies, removed stale eslint-disable comments) look correct. The encoding-test.js fix and net-nodejs-test.js reject→throw fix are genuine bug corrections.

---

This review was generated by an AI assistant and may contain inaccuracies.

[ask-bonk]

To https://github.com/cloudflare/workerd.git
! [rejected] yagiz/enable-eslint-wd-test -> yagiz/enable-eslint-wd-test (fetch first)
error: failed to push some refs to 'https://github.com/cloudflare/workerd.git'
hint: Updates were rejected because the remote contains work that you do not
hint: have locally. This is usually caused by another repository pushing to
hint: the same ref. If you want to integrate the remote changes, use
hint: 'git pull' before pushing again.
hint: See the 'Note about fast-forwards' in 'git push --help' for details.

github run

[ask-bonk]

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[anonrig]

Force pushed to fix conflicts & add missing copyright headers to tests