available-prefixes deserialization causes validation to run multiple times

[lampwins]

Environment

• Nautobot version (Docker tag too if applicable): 2.3
• Python version:
• Database platform, version:
• Middleware(s):

Steps to Reproduce

1. Create a prefix via available-prefixes
2. Have a custom validator setup on prefix, that relies on the .prefix or .ancestors() methods

Expected Behavior

Validation to run only once, with all properties and data populated

Observed Behavior

Validation is run multiple times, with the object in various partial states.

[lampwins]

We think this is due to deserialization happening in multiple stages, to validate then actually create the object.

[lampwins]

Need to also check available-ips and available-vlans endpoints.