[ThinkAuth](https://auth.sys.thinkhead.org/) to 2025.10.4 --> 2025.12.4 --> 2026.2.2

Tracking ticket for a line in release 5.1.48.13 that shipped without one.

Upgraded ThinkAuth to 2025.10.4 --> 2025.12.4 --> 2026.2.2

Created retroactively so every changelog line has a ticket a reader can follow.