Add type generation support for experimental secrets property

[jamesopstad]

Add type generation support for experimental secrets property

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• Tests
  • Tests included/updated
  • Automated tests not possible - manual testing has been completed as follows:
  • Additional testing not necessary because:
• Public documentation
  • Cloudflare docs PR(s):
  • Documentation not necessary because: experimental feature

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[changeset-bot]

🦋 Changeset detected

Latest commit: 376ad55

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commit: f47195e

[devin-ai-integration]

✅ Devin Review: No Issues Found

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[github-actions]

⚠️ Issues found

File: .changeset/sharp-sheep-buy.md

Issue: Missing opt-in instructions for experimental feature

The changeset describes support for an experimental secrets property, but per the guidelines in .changeset/README.md:

When adding or changing experimental features, call this out explicitly in the changeset description.

The description does not explain how users can opt in to (or enable) the experimental secrets property. The changeset should include information on how to use this experimental feature — e.g., what to add to wrangler.json, what flag to pass, or any other mechanism required to enable it.

Suggested fix: Expand the body to include an opt-in example, such as the relevant wrangler.json configuration snippet that enables the experimental secrets property and triggers type generation for it.