Remove BrandDivider and use vanilla instead.

lib/ui/components/brand_divider/brand_divider.dart

@@ -1,12 +0,0 @@
-import 'package:flutter/material.dart';
-
-class BrandDivider extends StatelessWidget {
-  const BrandDivider({final super.key});
-
-  @override
-  Widget build(final BuildContext context) => Container(
-        width: double.infinity,
-        height: 1,
-        color: Theme.of(context).colorScheme.onSurface.withAlpha(30),
-      );
-}