Fixes https://github.com/payloadcms/payload/issues/9363
This fixes the following issues that caused fields to be either hidden,
or incorrectly set to readOnly in certain configurations:
- In some cases, permissions were sanitized incorrectly. This PR
rewrites the sanitizePermissions function and adds new unit tests
- after a document save, the client was receiving unsanitized
permissions. Moving the sanitization logic to the endpoint fixes this
- Various incorrect handling of permissions in our form state endpoints
/ RenderFields
