backend: fix regression in 796a5c725b, when using %d or %f as formatters, we can't push them through escapeshellarg() as it will mangle the data unneeded. closes https://github.com/opnsense/core/issues/9686

src/opnsense/mvc/app/library/OPNsense/Core/Shell.php

@@ -49,9 +49,8 @@ class Shell
         }
 
         foreach ($args as $id => $arg) {
-            $args[$id] = escapeshellarg($arg ?? '');
+            $args[$id] = is_int($arg) || is_float($arg) ? $arg : escapeshellarg($arg ?? '');
         }
-
         return vsprintf(implode(' ', $format), $args);
     }