Revert disable_opcache to simple single-line command - avoid JPS YAML parsing issues

mbadmin.jps

@@ -652,14 +652,8 @@ actions:
   disable_opcache:
     - cmd[cp]:
         user: root
-        commands:
-          - |
-            set -euo pipefail
-            OUTPUT=$(php /home/litespeed/mbmanager/scripts/toggle_opcache.php disable 2>&1)
-            echo "$OUTPUT"
-            if echo "$OUTPUT" | grep -q '"status".*:.*"error"'; then
-              exit 1
-            fi
+        commands: 
+          - php /home/litespeed/mbmanager/scripts/toggle_opcache.php disable
     - restartNodes:
         - nodeGroup: "cp"
           reboot: true