C3: Relax validation for existing scripts

[jculvey]

What this PR solves / how to test:

In a previous PR we made project validation a little more strict so that it conforms to the pages project API. However, this could mean that users with existing workers scripts won't be able to retain a name they used previously. This PR relaxes the validation for that one particular use case.

I also found an issue with processArgument where we weren't actually crashing on invalid arguments passed via the command line.

Associated docs issue(s)/PR(s):

• [insert associated docs issue(s)/PR(s)]

Author has included the following, where applicable:

• Tests
• Changeset (Changeset guidelines)

Reviewer is to perform the following, as applicable:

• Checked for inclusion of relevant tests
• Checked for inclusion of a relevant changeset
• Checked for creation of associated docs updates
• Manually pulled down the changes and spot-tested

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[changeset-bot]

🦋 Changeset detected

Latest commit: ceb1b3b

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

This PR includes changesets to release 1 package

Name	Type
create-cloudflare	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/6513026833/npm-package-wrangler-4177

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

npm install --save-dev https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/prs/6513026833/npm-package-wrangler-4177

Or you can use npx with this latest build directly:

npx https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/6513026833/npm-package-wrangler-4177 dev path/to/script.js

Additional artifacts:

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/6513026833/npm-package-cloudflare-pages-shared-4177

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

---

wrangler@3.13.1 includes the following runtime dependencies:

Package	Constraint	Resolved
miniflare	3.20231010.0	3.20231010.0
workerd	1.20231010.0	1.20231010.0
workerd --version	1.20231010.0	2023-10-10

|

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