fedora-intune: take the first Defender health snapshot right after boot

The first snapshot came 2 minutes after boot, so the compliance check at
the first sign-in found none, fell back to mdatp (which won't answer it)
and reported Defender as not running. Himmelblau then doesn't check again
for 8 hours. Start the timer 20 seconds after boot, and wait up to
2 minutes for the daemon to answer so that snapshot isn't a false
"not running". The timer runs it in the background, so boot isn't held up.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

images/fedora-intune/files/mdatp-health-snapshot.timer

@@ -2,7 +2,9 @@
 Description=Save Microsoft Defender health every 5 minutes
 
 [Timer]
-OnBootSec=2min
+# Early, so the compliance check at the first sign-in after boot finds a
+# snapshot; Himmelblau doesn't check again for 8 hours.
+OnBootSec=20s
 OnUnitActiveSec=5min
 
 [Install]