update datepicker widget that it can be reused with different name

lib/screens/addCam/add_cam_main.dart

@@ -701,6 +701,7 @@ class _AddCamMainState extends State<AddCamMain> {
                     onDateChanged: (value) {
                       datum = value;
                     },
+                    name: AppLocalizations.of(context)!.pickDate,
                   ),
                   KontDat(
                     initKontDat: kontDat,