agent_servers: Don't fill in unneeded fields in settings when auto-adding new agent servers (#47293)

Adding some serde magic to avoid adding a bunch of empty fields to the
settings file.

Release Notes:

- N/A
69ea59d2efBen Brandt committed on 1/21/2026, 2:40:31 PM· committed by GitHubparentdb37fb0
1 file changedLine totals unavailable