Refactor empty state widget to use a container for better layout control

lib/pages/common/custom_table.dart

@@ -179,7 +179,10 @@ class _DynamicTableState extends State<DynamicTable> {
     );
   }
 
-  Widget _buildEmptyState() => Column(
+  Widget _buildEmptyState() => Container(
+        height: widget.size.height,
+        color: ColorsManager.whiteColors,
+        child: Column(
           mainAxisAlignment: MainAxisAlignment.center,
           children: [
             Row(
@@ -203,7 +206,9 @@ class _DynamicTableState extends State<DynamicTable> {
                 ),
               ],
             ),
+            SizedBox(height: widget.size.height * 0.5),
           ],
+        ),
       );
   Widget _buildSelectAllCheckbox() {
     return Container(