feat: 4533 - new twitter logo and label (#4539)

Deleted file:
* `twitter-bird.svg`

New file:
* `x-logo.svg`

Impacted files:
* `app_en.arb`: edited twitter label
* `user_preferences_connect.dart`: now using the new tinted twitter logo

packages/smooth_app/lib/l10n/app_en.arb

@@ -861,7 +861,7 @@
     "connect_with_us": "Connect with us",
     "instagram": "Instagram",
     "instagram_link": "https://instagram.com/open.food.facts",
-    "twitter": "Twitter",
+    "twitter": "X (formerly Twitter)",
     "twitter_link": "https://www.twitter.com/openfoodfacts",
     "blog": "Blog",
     "faq": "FAQ",

packages/smooth_app/lib/pages/preferences/user_preferences_connect.dart

@@ -1,3 +1,5 @@
+import 'dart:ui' as ui;
+
 import 'package:device_info_plus/device_info_plus.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
@@ -64,8 +66,12 @@ class UserPreferencesConnect extends AbstractUserPreferences {
           title: appLocalizations.twitter,
           url: appLocalizations.twitter_link,
           leading: SvgPicture.asset(
-            'assets/preferences/twitter-bird.svg',
+            'assets/preferences/x-logo.svg',
             width: DEFAULT_ICON_SIZE,
+            colorFilter: ui.ColorFilter.mode(
+              Theme.of(context).colorScheme.onBackground,
+              ui.BlendMode.srcIn,
+            ),
             package: AppHelper.APP_PACKAGE,
           ),
         ),