fix : filter bottom sheet

packages/core/lib/presentation/widget/bottom_sheet/date_picker_bottom_sheet.dart

@@ -9,10 +9,15 @@ GestureDetector dateFilterWidget({
 }) {
   return GestureDetector(
     onTap: () {
-      Get.bottomSheet(modalDatePicker(onDateSelected: (value) {
-        date = value.obs;
-        onChanged(value);
-      }));
+      Get.bottomSheet(
+        modalDatePicker(
+          initialDate: date.value,
+          onDateSelected: (value) {
+            date.value = value;
+            onChanged(value);
+          },
+        ),
+      );
     },
     child: Container(
       height: 35,
@@ -45,8 +50,8 @@ GestureDetector dateFilterWidget({
   );
 }
 
-Container modalDatePicker({required ValueChanged<Jalali> onDateSelected,Jalali? initialDate,}) {
-  Jalali? datePicked;
+Container modalDatePicker({required ValueChanged<Jalali> onDateSelected, Jalali? initialDate}) {
+
   return Container(
     height: 250,
     color: Colors.white,
@@ -84,10 +89,10 @@ Container modalDatePicker({required ValueChanged<Jalali> onDateSelected,Jalali?
         Divider(height: 0, thickness: 1),
         Expanded(
           child: PersianCupertinoDatePicker(
-            initialDateTime: initialDate ??Jalali.now(),
+            initialDateTime: initialDate ?? Jalali.now(),
             mode: PersianCupertinoDatePickerMode.date,
             onDateTimeChanged: (dateTime) {
-              datePicked = dateTime;
+             initialDate = dateTime;
             },
           ),
         ),