fix: use correct main file in wrangler.toml for astro + workers assets template

[emily-shen]

What this PR solves / how to test

Fixes #6980

Author has addressed the following

• Tests
  • TODO (before merge)
  • Tests included
  • Tests not necessary because: no relevant tests, tested manually
• E2E Tests CI Job required? (Use "e2e" label or ask maintainer to run separately)
  • I don't know
  • Required
  • Not required because: no e2e tests for experimental assets templates yet
• 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: bugfix

[changeset-bot]

🦋 Changeset detected

Latest commit: 31ee399

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/11366178951/npm-package-wrangler-6982

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

npm install --save-dev https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/prs/6982/npm-package-wrangler-6982

Or you can use npx with this latest build directly:

npx https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/11366178951/npm-package-wrangler-6982 dev path/to/script.js

Additional artifacts:

npx https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/11366178951/npm-package-create-cloudflare-6982 --no-auto-update

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/11366178951/npm-package-cloudflare-kv-asset-handler-6982

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/11366178951/npm-package-miniflare-6982

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/11366178951/npm-package-cloudflare-pages-shared-6982

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/11366178951/npm-package-cloudflare-vitest-pool-workers-6982

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/11366178951/npm-package-cloudflare-workers-editor-shared-6982

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/11366178951/npm-package-cloudflare-workers-shared-6982

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.