feat: Introduce new date picker components for enhanced date selection

- Added `FormDatePicker` and `InlineCellDatePicker` components to provide flexible date selection options.
- Implemented a modernized date picker interface with calendar navigation, year selection, and time input capabilities.
- Enhanced `DateWidget` to support both date and datetime formats, improving user experience in date handling.
- Updated `CategoryColumnList` to group columns dynamically and manage expanded states for better organization.
- Improved `AlertDialog` z-index for better visibility in modal interactions.
- Refactored `ScreenModal` to ensure consistent modal behavior across the application.

frontend/lib/registry/components/button-primary/ButtonPrimaryComponent.tsx

@@ -1328,9 +1328,9 @@ export const ButtonPrimaryComponent: React.FC<ButtonPrimaryComponentProps> = ({
         )}
       </div>
 
-      {/* 확인 다이얼로그 - EditModal보다 위에 표시하도록 z-index 최상위로 설정 */}
+      {/* 확인 다이얼로그 */}
       <AlertDialog open={showConfirmDialog} onOpenChange={setShowConfirmDialog}>
-        <AlertDialogContent className="z-[99999]">
+        <AlertDialogContent>
           <AlertDialogHeader>
             <AlertDialogTitle>{getConfirmTitle()}</AlertDialogTitle>
             <AlertDialogDescription>{getConfirmMessage()}</AlertDialogDescription>