added list tile content padding

lib/theme.dart

@@ -22,5 +22,6 @@ ThemeData _baseTheme(ColorScheme scheme) =>
         shape: RoundedRectangleBorder(
           borderRadius: BorderRadiusGeometry.circular(12),
         ),
+        contentPadding: EdgeInsetsDirectional.only(start: 16.0, end: 24.0),
       ),
     );