Registering `passkey-endpoints` well-known URI

[sherifhanna-google]

Please confirm that:

• You have read and understood the requirements for registration.
• You have checked the registry and found no current value that meets your needs.
• Your specification reference URL is stable; ideally, managed by a widely-recognised standards development organisation (e.g., published as an RFC). Otherwise, please give additional information.

If so, please enter the details of the well-known URI below:

• URI suffix: passkey-endpoints
• Change controller: Sherif Hanna, Google LLC, sherifhanna@google.com
• Specification document(s): https://github.com/ms-id-standards/MSIdentityStandardsExplainers/blob/main/PasskeyEndpointsWellKnownUrl/explainer.md

Any additional information (this will not be included in the registry)?
*Status: provisional

[sherifhanna-google]

Withdrawing for now.