Add more helpful error messages when validating compatibility date

[GregBrimble]

What this PR solves / how to test

Fixes WC-2854.

Author has addressed the following

• Tests
  • TODO (before merge)
  • Tests included
  • Tests not necessary because:
• E2E Tests CI Job required? (Use "e2e" label or ask maintainer to run separately)
  • I don't know
  • Required
  • Not required because: no e2e coverage
• Changeset (Changeset guidelines)
  • TODO (before merge)
  • Changeset included
  • Changeset not necessary because:
• Public documentation
  • TODO (before merge)
  • Cloudflare docs PR(s):
  • Documentation not necessary because: just adding better errors :)

[changeset-bot]

🦋 Changeset detected

Latest commit: 6eea915

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

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[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/11378644081/npm-package-wrangler-7002

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

npm install --save-dev https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/prs/7002/npm-package-wrangler-7002

Or you can use npx with this latest build directly:

npx https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/11378644081/npm-package-wrangler-7002 dev path/to/script.js

Additional artifacts:

npx https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/11378644081/npm-package-create-cloudflare-7002 --no-auto-update

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/11378644081/npm-package-cloudflare-kv-asset-handler-7002

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/11378644081/npm-package-miniflare-7002

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/11378644081/npm-package-cloudflare-pages-shared-7002

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/11378644081/npm-package-cloudflare-vitest-pool-workers-7002

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/11378644081/npm-package-cloudflare-workers-editor-shared-7002

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/11378644081/npm-package-cloudflare-workers-shared-7002

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

---

[email protected] includes the following runtime dependencies:

Package	Constraint	Resolved
miniflare	workspace:*	3.20241011.0
workerd	1.20241011.1	1.20241011.1
workerd --version	1.20241011.1	2024-10-11

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