fix(localization): refine Arabic and English snackbar messages and labels

- Update Arabic snackbar message for no followed items
- Update English snackbar message for no followed items
- Update English label for "Event Country" in filter options

Author: fulleni

lib/l10n/app_localizations.dart

@@ -371,7 +371,7 @@ abstract class AppLocalizations {
   /// Filter page label indication where the hadline event has took place
   ///
   /// In en, this message translates to:
-  /// **'Event Country'**
+  /// **'Country of Event'**
   String get headlinesFeedFilterEventCountryLabel;
 
   /// Filter page label indication where the headline source is located
@@ -1391,7 +1391,7 @@ abstract class AppLocalizations {
   /// Snackbar message shown when user tries to apply followed filters but has none.
   ///
   /// In en, this message translates to:
-  /// **'You are not following any categories or sources to apply as a filter.'**
+  /// **'You are not following any items to use as a filter.'**
   String get noFollowedItemsForFilterSnackbar;
 
   /// Headline for the request code page

lib/l10n/app_localizations_ar.dart

@@ -713,7 +713,7 @@ class AppLocalizationsAr extends AppLocalizations {
 
   @override
   String get noFollowedItemsForFilterSnackbar =>
-      'أنت لا تتابع أي فئات أو مصادر لتطبيقها كفلتر.';
+      'أنت لا تتبع أي عناصر لتطبيقها كفلتر.';
 
   @override
   String get requestCodePageHeadline => 'أدخل بريدك الإلكتروني';

lib/l10n/app_localizations_en.dart

@@ -151,7 +151,7 @@ class AppLocalizationsEn extends AppLocalizations {
   String get headlinesFeedFilterSourceReuters => 'Reuters';
 
   @override
-  String get headlinesFeedFilterEventCountryLabel => 'Event Country';
+  String get headlinesFeedFilterEventCountryLabel => 'Country of Event';
 
   @override
   String get headlinesFeedFilterSourceCountryLabel => 'Source Headquarter';
@@ -713,7 +713,7 @@ class AppLocalizationsEn extends AppLocalizations {
 
   @override
   String get noFollowedItemsForFilterSnackbar =>
-      'You are not following any categories or sources to apply as a filter.';
+      'You are not following any items to use as a filter.';
 
   @override
   String get requestCodePageHeadline => 'Enter Your Email';

lib/l10n/arb/app_ar.arb

@@ -926,7 +926,7 @@
     "@mustBeLoggedInToUseFeatureError": {
         "description": "Error message shown when a logged-in user is required for a feature"
     },
-    "noFollowedItemsForFilterSnackbar": "أنت لا تتابع أي فئات أو مصادر لتطبيقها كفلتر.",
+    "noFollowedItemsForFilterSnackbar": "أنت لا تتبع أي عناصر لتطبيقها كفلتر.",
     "@noFollowedItemsForFilterSnackbar": {
         "description": "Snackbar message shown when user tries to apply followed filters but has none."
     },

lib/l10n/arb/app_en.arb

@@ -186,7 +186,7 @@
     "@headlinesFeedFilterSourceReuters": {
         "description": "Filter option for Reuters source"
     },
-    "headlinesFeedFilterEventCountryLabel": "Event Country",
+    "headlinesFeedFilterEventCountryLabel": "Country of Event",
     "@headlinesFeedFilterEventCountryLabel": {
         "description": "Filter page label indication where the hadline event has took place"
     },
@@ -928,7 +928,7 @@
     "@mustBeLoggedInToUseFeatureError": {
         "description": "Error message shown when a logged-in user is required for a feature"
     },
-    "noFollowedItemsForFilterSnackbar": "You are not following any categories or sources to apply as a filter.",
+    "noFollowedItemsForFilterSnackbar": "You are not following any items to use as a filter.",
     "@noFollowedItemsForFilterSnackbar": {
         "description": "Snackbar message shown when user tries to apply followed filters but has none."
     },