Stabilise Worker Loader binding

[penalosa]

Move the worker loader binding from unsafe to a proper binding.

https://jira.cfdata.org/browse/CR-1306677

Previously config looked like:

"unsafe": {
    "bindings": [
      {
        "name": "LOADER",
        "type": "worker-loader"
      }
    ]
  }

and after this PR it will look like:

"worker_loaders": [{
    "binding": "LOADER"
  }]

---

• Tests
  • Tests included
  • Tests not necessary because:
• Public documentation
  • Cloudflare docs PR(s): Document ctx.props, ctx.exports, and worker-loader. cloudflare-docs#25303
  • Documentation not necessary because:
• Wrangler V3 Backport
  • Wrangler PR:
  • Not necessary because: not in v3

[changeset-bot]

🦋 Changeset detected

Latest commit: 6503ea9

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

This PR includes changesets to release 3 packages

Name	Type
wrangler	Minor
@cloudflare/vite-plugin	Major
@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

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commit: 6503ea9

[dario-piotrowicz]

LGTM 🙂