kwallet: treat exit code 1 as success in kwalletd6-logon.service

kwalletd6 exits with code 1 when the Wayland compositor shuts down
during logout. Without SuccessExitStatus=1, the service is marked
failed and ExecStop (the bind mount umount) never runs. Treating
exit code 1 as success keeps the service in active-exited state so
systemd fires ExecStop cleanly on session end.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

client_software/0010_kwallet/user_run.sh

@@ -21,6 +21,7 @@ fi
 WALLETPATH_CFG="${HOME}/.local/share/kwalletd"
 systemd-run --user --unit=kwalletd6-logon \
     --property=RemainAfterExit=yes \
+    --property=SuccessExitStatus=1 \
     --property=Before=gocryptfs-home.service \
     --property="ExecStop=/usr/bin/sudo /usr/bin/umount -l ${WALLETPATH_CFG}" \
     kwalletd6 >${TEMPDIR}/kwalletd6.log 2>&1 &