fix: 7060 - removed preferences v1 (#7110)

Deleted files:
* `abstract_user_preferences.dart`
* `user_preferences_account.dart`
* `user_preferences_advanced_settings.dart`
* `user_preferences_choose_accent_color.dart`
* `user_preferences_choose_app_theme.dart`
* `user_preferences_choose_text_color_contrast.dart`
* `user_preferences_connect.dart`
* `user_preferences_contribute.dart`
* `user_preferences_country_selector.dart`
* `user_preferences_currency_selector.dart`
* `user_preferences_dev_debug_info.dart`
* `user_preferences_donation.dart`
* `user_preferences_faq.dart`
* `user_preferences_image_source.dart`
* `user_preferences_language_selector.dart`
* `user_preferences_prices.dart`
* `user_preferences_search_page.dart`
* `user_preferences_settings.dart`
* `user_preferences_search_page.dart`

Impacted files:
* `app_navigator.dart`: minor refactoring
* `bottom_sheets_test.dart`: minor refactoring
* `dev_mode_root.dart`: unrelated removal of useless code
* `dialogs_test.dart`: minor refactoring
* `forgot_password_page-*.png`: golden
* `login_page-*.png`: golden
* `new_product_header.dart`: minor refactoring
* `preferences_page.dart`: minor refactoring
* `search_bottom_bar.dart`: minor fix to make tests pass
* `search_field.dart`: minor fix to make tests pass
* `signup_page-*.png`: golden
* `user_preferences_dev_mode.dart`: strongly limited to what's useful
* `user_preferences_food.dart`: removed reference to now useless interface AbstractUserPreferences
* `user_preferences_page.dart`: now focused only on food
* `user_preferences_page-*.png`: golden
* `user_preferences_page_test.dart`: minor refactoring

Author: monsieurtanuki

packages/smooth_app/lib/generic_lib/widgets/app_bars/search_bottom_bar.dart

@@ -19,7 +19,7 @@ class _SearchBottomBarState extends State<SearchBottomBar> {
   Widget build(BuildContext context) {
     return Padding(
       padding: const EdgeInsetsDirectional.symmetric(
-        vertical: BALANCED_SPACE,
+        vertical: SMALL_SPACE,
         horizontal: MEDIUM_SPACE,
       ),
       child: SearchField(

packages/smooth_app/lib/pages/navigator/app_navigator.dart

@@ -218,13 +218,9 @@ class _SmoothGoRouter {
               },
             ),
             GoRoute(
-              path: '${_InternalAppRoutes.PREFERENCES_PAGE}/:preferenceType',
+              path: '${_InternalAppRoutes.PREFERENCES_PAGE}/food',
               builder: (BuildContext context, GoRouterState state) =>
-                  UserPreferencesPage(
-                    type: PreferencePageType.fromTag(
-                      state.pathParameters['preferenceType'],
-                    ),
-                  ),
+                  const UserPreferencesFoodPage(),
             ),
             GoRoute(
               path: _InternalAppRoutes.SEARCH_PAGE,
@@ -540,8 +536,8 @@ class AppRoutes {
       '/${_InternalAppRoutes.PRODUCT_EDITOR_PAGE}/$barcode';
 
   // App preferences
-  static String PREFERENCES(PreferencePageType type) =>
-      '/${_InternalAppRoutes.PREFERENCES_PAGE}/${type.tag}';
+  static String get FOOD_PREFERENCES =>
+      '/${_InternalAppRoutes.PREFERENCES_PAGE}/food';
 
   // Search view
   static String get SEARCH => '/${_InternalAppRoutes.SEARCH_PAGE}';