[PATCH] nspawn: apply BindUser/Ephemeral from settings file only if trusted

[PATCH] nspawn: apply BindUser/Ephemeral from settings file only if trusted

Originally reported on yeswehack.com as:
YWH-PGM9780-116

Follow-up for 2f8930449079403b26c9164b8eeac78d5af2c8df
Follow-up for a2f577fca0be79b23f61f033229b64884e7d840a

(cherry picked from commit 61bceb1bff4b1f9c126b18dc971ca3e6d8c71c40)
(cherry picked from commit 718711ed876c870a72149eea279b819cdab14e91)
(cherry picked from commit e4db9c12957d315c0ed22c6ca87a816d0927d6dc)

Origin: backport, https://github.com/systemd/systemd/commit/773fd3b6e72e6c83cbb1cfc1cb20f3793db8649a

Gbp-Pq: Name CVE-2026-40226-1.patch