perf(userfront): optimize login web loading

userfront/lib/core/theme/app_theme.dart

@@ -42,11 +42,7 @@ ThemeData buildDarkTheme() {
 
 ThemeData _buildTheme(ColorScheme colorScheme) {
   final isDark = colorScheme.brightness == Brightness.dark;
-  final base = ThemeData(
-    useMaterial3: true,
-    colorScheme: colorScheme,
-    fontFamily: 'NotoSansKR',
-  );
+  final base = ThemeData(useMaterial3: true, colorScheme: colorScheme);
 
   return base.copyWith(
     scaffoldBackgroundColor: colorScheme.surfaceContainerLowest,