Ignore OPTIONS requests in Oauth server

[penalosa]

What this PR solves / how to test

Fixes #[insert GH or internal issue number(s)].

Author has addressed the following

• Tests
  • TODO (before merge)
  • Included
  • Not necessary because: We'll follow up later with tests
• Changeset (Changeset guidelines)
  • TODO (before merge)
  • Included
  • Not necessary because:
• Public documentation
  • TODO (before merge)
  • Cloudflare docs PR(s): https://github.com/cloudflare/cloudflare-docs/pull/...
  • Not necessary because: bugfix

[changeset-bot]

🦋 Changeset detected

Latest commit: 51ab6a8

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
wrangler	Patch
@cloudflare/vitest-pool-workers	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[github-actions]

A wrangler prerelease is available for testing. You can install this latest build in your project with:

npm install --save-dev https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/8363164863/npm-package-wrangler-5324

You can reference the automatically updated head of this PR with:

npm install --save-dev https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/prs/5324/npm-package-wrangler-5324

Or you can use npx with this latest build directly:

npx https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/8363164863/npm-package-wrangler-5324 dev path/to/script.js

Additional artifacts:

npx https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/8363164863/npm-package-create-cloudflare-5324 --no-auto-update

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/8363164863/npm-package-cloudflare-kv-asset-handler-5324

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/8363164863/npm-package-miniflare-5324

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/8363164863/npm-package-cloudflare-pages-shared-5324

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/8363164863/npm-package-cloudflare-vitest-pool-workers-5324

Note that these links will no longer work once the GitHub Actions artifact expires.

---

wrangler@3.35.0 includes the following runtime dependencies:

Package	Constraint	Resolved
miniflare	workspace:*	3.20240314.0
workerd	1.20240314.0	1.20240314.0
workerd --version	1.20240314.0	2024-03-14

Please ensure constraints are pinned, and miniflare/workerd minor versions match.