chore(l10n): update sign in headlines and subheadlines

Author: fulleni

lib/l10n/app_localizations.dart

@@ -461,13 +461,13 @@ abstract class AppLocalizations {
   /// Headline for the authentication page during standard sign-in
   ///
   /// In en, this message translates to:
-  /// **'Sign In'**
+  /// **'Headlines Toolkit'**
   String get authenticationSignInHeadline;
 
   /// Subheadline for the authentication page during standard sign-in
   ///
   /// In en, this message translates to:
-  /// **'Sign in or continue anonymously to personalize your feed.'**
+  /// **'Develop News Headlines Apps Rapidly & Reliably.'**
   String get authenticationSignInSubheadline;
 
   /// AppBar title for the email sign-in page

lib/l10n/app_localizations_ar.dart

@@ -197,11 +197,11 @@ class AppLocalizationsAr extends AppLocalizations {
       'إحفظ إعداداتك، تفضيلات المحتوى والمزيد عبر الأجهزة.';
 
   @override
-  String get authenticationSignInHeadline => 'تسجيل الدخول';
+  String get authenticationSignInHeadline => 'هادلاينز تولكيت';
 
   @override
   String get authenticationSignInSubheadline =>
-      'سجل الدخول أو تابع كمجهول لتخصيص موجز الأخبار الخاص بك.';
+      'طور التطبيقات الإخبارية بسرعة وبشكل موثوق.';
 
   @override
   String get emailSignInPageTitle => 'تسجيل الدخول بالبريد الإلكتروني';

lib/l10n/app_localizations_en.dart

@@ -199,11 +199,11 @@ class AppLocalizationsEn extends AppLocalizations {
       'save your settings, content preferences and more across devices.';
 
   @override
-  String get authenticationSignInHeadline => 'Sign In';
+  String get authenticationSignInHeadline => 'Headlines Toolkit';
 
   @override
   String get authenticationSignInSubheadline =>
-      'Sign in or continue anonymously to personalize your feed.';
+      'Develop News Headlines Apps Rapidly & Reliably.';
 
   @override
   String get emailSignInPageTitle => 'Sign in with Email';

lib/l10n/arb/app_ar.arb

@@ -246,11 +246,11 @@
     "@authenticationLinkingSubheadline": {
         "description": "عنوان فرعي يشرح فائدة ربط حساب مجهول"
     },
-    "authenticationSignInHeadline": "تسجيل الدخول",
+    "authenticationSignInHeadline": "هادلاينز تولكيت",
     "@authenticationSignInHeadline": {
         "description": "عنوان صفحة المصادقة أثناء تسجيل الدخول القياسي"
     },
-    "authenticationSignInSubheadline": "سجل الدخول أو تابع كمجهول لتخصيص موجز الأخبار الخاص بك.",
+    "authenticationSignInSubheadline": "طور التطبيقات الإخبارية بسرعة وبشكل موثوق.",
     "@authenticationSignInSubheadline": {
         "description": "عنوان فرعي لصفحة المصادقة أثناء تسجيل الدخول القياسي"
     },

lib/l10n/arb/app_en.arb

@@ -246,11 +246,11 @@
     "@authenticationLinkingSubheadline": {
         "description": "Subheadline explaining the benefit of linking an anonymous account"
     },
-    "authenticationSignInHeadline": "Sign In",
+    "authenticationSignInHeadline": "Headlines Toolkit",
     "@authenticationSignInHeadline": {
         "description": "Headline for the authentication page during standard sign-in"
     },
-    "authenticationSignInSubheadline": "Sign in or continue anonymously to personalize your feed.",
+    "authenticationSignInSubheadline": "Develop News Headlines Apps Rapidly & Reliably.",
     "@authenticationSignInSubheadline": {
         "description": "Subheadline for the authentication page during standard sign-in"
     },