Use the clone helper instead of a interal function

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@tp/tp-form",
-  "version": "1.1.0",
+  "version": "1.1.1",
   "description": "",
   "main": "tp-form.js",
   "scripts": {
@@ -13,6 +13,7 @@
   "author": "trading_peter",
   "license": "Apache-2.0",
   "dependencies": {
-    "lit": "^2.2.0"
+    "@tp/helpers": "^2.3.1",
+    "lit": "^2.8.0"
   }
 }