Enable NM 1.52 link-local fallback resolution

[thatcomputerguy0101]

Description

This enables link-local as a fallback to DHCP address resolution, using the new features of NetworkManager 1.52. Debian 13 (Trixie) and Ubuntu 26.04 (Resolute) introduce the required updates to NetworkManager for this to work. Unlike #1550, this continues to timeout and retry DHCP while holding a link-local address, which should avoid breaking compatibility with DHCP servers that don't respond immediately.

Closes #1813, blocked on updating the images to have NM 1.52 or later.

Meta

Merge checklist:

• Pull Request title is short, imperative summary of proposed changes
• The description documents the what and why
• If this PR changes behavior or adds a feature, user documentation is updated
• If this PR touches photon-serde, all messages have been regenerated and hashes have not changed unexpectedly
• If this PR touches configuration, this is backwards compatible with settings back to v2025.3.2
• If this PR touches pipeline settings or anything related to data exchange, the frontend typing is updated
• If this PR addresses a bug, a regression test for it is added

[thatcomputerguy0101]

It would probably be good to mention this in the documentation, but I don't think there is currently a section talking about DHCP.

[mcm001]

Yeah, I don't believe our documentation talks about networking very much at all. It seems like a common enough foot gun. It may be worth mentioning, although most people probably don't need to know very much

[thatcomputerguy0101]

I added some draft documentation, although I'm unsure if I got the level of detail right.