fix(l10n): update translations and remove account linking reference

- Remove incorrect/old translations in Arabic and English
- Simplify messages to remove reference to "linking" an account
- Focus on the benefit of signing up to access information across devices

Author: fulleni

lib/l10n/app_localizations.dart

@@ -119,13 +119,13 @@ abstract class AppLocalizations {
   /// Headline text on the account linking page
   ///
   /// In en, this message translates to:
-  /// **'Link Account'**
+  /// **'Save your progress'**
   String get accountLinkingHeadline;
 
   /// Body text explaining the benefits of linking an account
   ///
   /// In en, this message translates to:
-  /// **'Signing up or linking allows you to access your information across multiple devices and ensures your progress isn\'t lost.'**
+  /// **'Signing up allows you to access your information across multiple devices and ensures your progress isn\'t lost.'**
   String get accountLinkingBody;
 
   /// Text for the Google sign-in button

lib/l10n/app_localizations_ar.dart

@@ -23,7 +23,7 @@ class AppLocalizationsAr extends AppLocalizations {
 
   @override
   String get accountLinkingBody =>
-      'يتيح لك التسجيل أو الربط الوصول إلى معلوماتك عبر أجهزة متعددة ويضمن عدم فقدان تقدمك.';
+      'يتيح لك التسجيل الوصول إلى معلوماتك عبر أجهزة متعددة ويضمن عدم فقدان تقدمك.';
 
   @override
   String get accountLinkingContinueWithGoogleButton => 'المتابعة باستخدام جوجل';

lib/l10n/app_localizations_en.dart

@@ -19,11 +19,11 @@ class AppLocalizationsEn extends AppLocalizations {
       'Check your email for the sign-in link!';
 
   @override
-  String get accountLinkingHeadline => 'Link Account';
+  String get accountLinkingHeadline => 'Save your progress';
 
   @override
   String get accountLinkingBody =>
-      'Signing up or linking allows you to access your information across multiple devices and ensures your progress isn\'t lost.';
+      'Signing up allows you to access your information across multiple devices and ensures your progress isn\'t lost.';
 
   @override
   String get accountLinkingContinueWithGoogleButton => 'Continue with Google';

lib/l10n/arb/app_ar.arb

@@ -16,7 +16,7 @@
     "@accountLinkingHeadline": {
         "description": "Headline text on the account linking page"
     },
-    "accountLinkingBody": "يتيح لك التسجيل أو الربط الوصول إلى معلوماتك عبر أجهزة متعددة ويضمن عدم فقدان تقدمك.",
+    "accountLinkingBody": "يتيح لك التسجيل الوصول إلى معلوماتك عبر أجهزة متعددة ويضمن عدم فقدان تقدمك.",
     "@accountLinkingBody": {
         "description": "Body text explaining the benefits of linking an account"
     },

lib/l10n/arb/app_en.arb

@@ -12,11 +12,11 @@
     "@accountLinkingEmailSentSuccess": {
         "description": "Success message shown after sending an email sign-in link"
     },
-    "accountLinkingHeadline": "Link Account",
+    "accountLinkingHeadline": "Save your progress",
     "@accountLinkingHeadline": {
         "description": "Headline text on the account linking page"
     },
-    "accountLinkingBody": "Signing up or linking allows you to access your information across multiple devices and ensures your progress isn't lost.",
+    "accountLinkingBody": "Signing up allows you to access your information across multiple devices and ensures your progress isn't lost.",
     "@accountLinkingBody": {
         "description": "Body text explaining the benefits of linking an account"
     },