fix(vite-plugin-cloudflare): allow "invoke" other than fetchModule

[sapphi-red]

Fixes this ecosystem-ci failure with Vite 7.2 beta:
https://github.com/vitejs/vite-ecosystem-ci/actions/runs/18900807449/job/53947420605#step:7:695

A new invoke method was added by vitejs/vite#21029, but that was blocked by this code

workers-sdk/packages/vite-plugin-cloudflare/src/miniflare-options.ts

Lines 515 to 518 in 55657eb

	assert(
	invokePayloadData.name === "fetchModule",
	`Invalid invoke event: ${invokePayloadData.name}`
	);

This PR removes that assertion as I don't think there's a reason to block other methods. Also this PR moves the custom logic to the environment side which feels less hacky to me (I'll revert this part if preferred).

ecosystem-ci run with this branch (passed ✅): https://github.com/vitejs/vite-ecosystem-ci/actions/runs/18904416204/job/53959123391

---

• Tests
  • Tests included
  • Tests not necessary because: It will be covered when upgrading Vite to 7.2
• Public documentation
  • Cloudflare docs PR(s):
  • Documentation not necessary because: internal bug fix
• Wrangler V3 Backport
  • Wrangler PR:
  • Not necessary because: actually, not sure

[changeset-bot]

🦋 Changeset detected

Latest commit: 78a5394

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

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wrangler

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commit: 78a5394

[jamesopstad]

Looks great and much cleaner. Thanks for the PR!

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