various code quality fixes (#5792)

* various code quality fixes

* reduce duplicated code

* add safety check

lib/process-services/src/lib/form/form.component.ts

@@ -392,11 +392,6 @@ export class FormComponent extends FormBaseComponent implements OnInit, OnDestro
         }
 
         this.executeOutcome.emit(args);
-        if (args.defaultPrevented) {
-            return false;
-        }
-
-        return true;
+        return !args.defaultPrevented;
     }
-
 }