BUG: rust ceramic one / CORS

**Describe the bug**
When connecting my local application the local ceramic node endpoint, it fails for missing CORS headers

**To Reproduce**
- build `ceramicstudio/private-data-playground`
- use http://localhost:5001 as ceramic node
- connect wallet, sign message
- try writing a message
-
**Expected behavior**

**Screenshots**

**Ceramic versions**
feat/private-data f20ccb9ee42e8af35d63e60d399bba61053b5cff

**Machine, OS, browser information (please complete the following information):**
OSX 14.6, Firefox

**Additional context**
Add any other context about the problem here.

Reproduce the failure by building ceramicstudio/private-data-playground, pointing it at http://localhost:5001, connecting a wallet, signing a message, and attempting a write. Inspect the local Ceramic node endpoint and its browser response headers first. Done means the write succeeds from the local application without the missing CORS-header error.

Written by the indexing model from the issue text.