refactor(l10n): update authentication linking text

- Updated headline to "Sync Your Data"
- Updated subheadline for clarity

Author: fulleni

lib/l10n/app_localizations.dart

@@ -449,13 +449,13 @@ abstract class AppLocalizations {
   /// Headline for the authentication page when linking an anonymous account
   ///
   /// In en, this message translates to:
-  /// **'Connect Your Account'**
+  /// **'Sync Your Data'**
   String get authenticationLinkingHeadline;
 
   /// Subheadline explaining the benefit of linking an anonymous account
   ///
   /// In en, this message translates to:
-  /// **'Sign in with Google or Email to save your preferences and reading history across devices.'**
+  /// **'save your settings, content preferences and more across devices.'**
   String get authenticationLinkingSubheadline;
 
   /// Headline for the authentication page during standard sign-in

lib/l10n/app_localizations_ar.dart

@@ -190,11 +190,11 @@ class AppLocalizationsAr extends AppLocalizations {
   String get authenticationEmailSignInButton => 'متابعة بالبريد الإلكتروني';
 
   @override
-  String get authenticationLinkingHeadline => 'ربط حسابك';
+  String get authenticationLinkingHeadline => 'زامن بياناتك';
 
   @override
   String get authenticationLinkingSubheadline =>
-      'سجل الدخول باستخدام جوجل أو البريد الإلكتروني لحفظ تفضيلاتك وسجل القراءة عبر الأجهزة.';
+      'إحفظ إعداداتك، تفضيلات المحتوى والمزيد عبر الأجهزة.';
 
   @override
   String get authenticationSignInHeadline => 'تسجيل الدخول';

lib/l10n/app_localizations_en.dart

@@ -192,11 +192,11 @@ class AppLocalizationsEn extends AppLocalizations {
   String get authenticationEmailSignInButton => 'Continue with Email';
 
   @override
-  String get authenticationLinkingHeadline => 'Connect Your Account';
+  String get authenticationLinkingHeadline => 'Sync Your Data';
 
   @override
   String get authenticationLinkingSubheadline =>
-      'Sign in with Google or Email to save your preferences and reading history across devices.';
+      'save your settings, content preferences and more across devices.';
 
   @override
   String get authenticationSignInHeadline => 'Sign In';

lib/l10n/arb/app_ar.arb

@@ -238,11 +238,11 @@
     "@authenticationEmailSignInButton": {
         "description": "نص زر بدء تدفق تسجيل الدخول بالبريد الإلكتروني"
     },
-    "authenticationLinkingHeadline": "ربط حسابك",
+    "authenticationLinkingHeadline": "زامن بياناتك",
     "@authenticationLinkingHeadline": {
         "description": "عنوان صفحة المصادقة عند ربط حساب مجهول"
     },
-    "authenticationLinkingSubheadline": "سجل الدخول باستخدام جوجل أو البريد الإلكتروني لحفظ تفضيلاتك وسجل القراءة عبر الأجهزة.",
+    "authenticationLinkingSubheadline": "إحفظ إعداداتك، تفضيلات المحتوى والمزيد عبر الأجهزة.",
     "@authenticationLinkingSubheadline": {
         "description": "عنوان فرعي يشرح فائدة ربط حساب مجهول"
     },

lib/l10n/arb/app_en.arb

@@ -238,11 +238,11 @@
     "@authenticationEmailSignInButton": {
         "description": "Button text for initiating email sign-in flow"
     },
-    "authenticationLinkingHeadline": "Connect Your Account",
+    "authenticationLinkingHeadline": "Sync Your Data",
     "@authenticationLinkingHeadline": {
         "description": "Headline for the authentication page when linking an anonymous account"
     },
-    "authenticationLinkingSubheadline": "Sign in with Google or Email to save your preferences and reading history across devices.",
+    "authenticationLinkingSubheadline": "save your settings, content preferences and more across devices.",
     "@authenticationLinkingSubheadline": {
         "description": "Subheadline explaining the benefit of linking an anonymous account"
     },