Stop Tuxedo backlight fix from aborting setup (#6583)

The orphaned module cleanup loop was the last statement in the script, so
when the glob matched nothing the trailing && list left an exit status of
1. run_logged propagates that, aborting hardware setup on every Tuxedo and
Slimbook install.

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>

install/hardware/fix-tuxedo-backlight.sh

@@ -11,6 +11,8 @@ if cat /sys/class/dmi/id/sys_vendor 2>/dev/null | grep -qi "TUXEDO\|Slimbook"; t
 
   # Remove any orphaned clevo_xsm_wmi module files not managed by a package
   for f in /lib/modules/*/extra/clevo-xsm-wmi.ko; do
-    [ -f "$f" ] && rm "$f"
+    if [[ -f $f ]]; then
+      rm "$f"
+    fi
   done
 fi