AAE-18890 Disable attach file in form preview mode (#9469)

lib/core/src/lib/form/services/form.service.ts

@@ -83,4 +83,8 @@ export class FormService implements FormValidationService {
         }
         return null;
     }
+
+    getPreviewState(): boolean {
+        return false;
+    }
 }

lib/core/src/lib/i18n/en.json

@@ -35,7 +35,10 @@
       "TITLE": "Start Form"
     },
     "PREVIEW": {
-      "IMAGE_NOT_AVAILABLE": "Preview not available"
+      "IMAGE_NOT_AVAILABLE": "Preview not available",
+      "ATTACH_FILE_WIDGET": {
+        "ON_ATTACH_FILE_CLICK": "In preview mode you cannot attach a file"
+      }
     },
     "FIELD": {
       "LOCALSTORAGE": "Local storage",