MRP pairing requirement is reported Optional on tvOS 15

[postlund]

Describe the bug

A minor regression when I re-added the MRP service but marked it as Disabled is that the pairing requirement is reported as Optional, which is wrong. It should be set to NotSupported.

Error log

No response

How to reproduce the bug?

Scan for a tvOS 15 device, the pairing requirement will be reported incorrectly.

What is expected behavior?

Pairing requirement should be set to NotSupported.

Operating System

Any

Python

Other

pyatv

0.9.8

Device

tvOS 15

Additional context

https://github.com/postlund/pyatv/issues/1558#issuecomment-1000708831