add type inference for serializing ip address types

[davidhewitt]

Change Summary

This adds serialization for IP address types, which was a pain point of Pydantic 2.12's changes to serialize_as_any.

Related issue number

Fixes #1856

Checklist

• Unit tests for the changes exist
• Documentation reflects the changes where applicable
• Pydantic tests pass with this pydantic-core (except for expected changes)
• My PR is ready to review, please add a comment including the phrase "please review" to assign reviewers

[codspeed-hq]

CodSpeed Performance Report

Merging #1868 will not alter performance

_{Comparing dh/infer-ip-addr (ab61999) with main (191187a)}

Summary

✅ 163 untouched

[Viicos]

I think we should apply the same to the network types?

[davidhewitt]

Good point, and probably also interfaces 👍

[davidhewitt]

Ah interfaces are already subclasses of IpAddress types, so no need for those to be added to code, I'll just add them to tests.