fix(pat inject): Fix logic for adding executing-class to the pat-inject element.

Author: thet

src/pat/inject/inject.js

@@ -726,7 +726,7 @@ const inject = {
             }
         });
         // Put the execute class on the elem that has pat inject on it
-        cfgs.filter((cfg) => cfg?.loadingClass).forEach((cfg) =>
+        cfgs.filter((cfg) => cfg?.executingClass).forEach((cfg) =>
             $el.addClass(cfg.executingClass)
         );