feat: Update theme colors for improved visibility in light and dark modes across multiple components

lib/components/settings/settings_theme_content.dart

@@ -12,7 +12,6 @@ class SettingsThemeContent extends StatelessWidget {
     return Scaffold(
       appBar: AppBar(
         title: const Text('Thème'),
-        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
       ),
       body: BlocBuilder<ThemeBloc, ThemeState>(
         builder: (context, state) {