style(l10n): improve consistency in saved feed filters limit labels

- Change "Saved Filters Limit" to "Saved Filters Limits" for better grammatical agreement
- Update corresponding description for consistency

Author: fulleni

lib/l10n/app_localizations.dart

@@ -1568,10 +1568,10 @@ abstract class AppLocalizations {
   /// **'Maximum number of countries, news sources, or categories this user role can follow (each type has its own limit).'**
   String get followedItemsLimitDescription;
 
-  /// Label for Saved filters Limit
+  /// Label for Saved filters Limits
   ///
   /// In en, this message translates to:
-  /// **'Saved Filters Limit'**
+  /// **'Saved Filters Limits'**
   String get savedFeedFiltersLimitLabel;
 
   /// Description for Saved Headlines Limit

lib/l10n/app_localizations_en.dart

@@ -824,7 +824,7 @@ class AppLocalizationsEn extends AppLocalizations {
       'Maximum number of countries, news sources, or categories this user role can follow (each type has its own limit).';
 
   @override
-  String get savedFeedFiltersLimitLabel => 'Saved Filters Limit';
+  String get savedFeedFiltersLimitLabel => 'Saved Filters Limits';
 
   @override
   String get savedFeedFiltersLimitDescription =>

lib/l10n/arb/app_en.arb

@@ -1022,9 +1022,9 @@
   "@followedItemsLimitDescription": {
     "description": "Description for Followed Items Limit"
   },
-  "savedFeedFiltersLimitLabel": "Saved Filters Limit",
+  "savedFeedFiltersLimitLabel": "Saved Filters Limits",
   "@savedFeedFiltersLimitLabel": {
-    "description": "Label for Saved filters Limit"
+    "description": "Label for Saved filters Limits"
   },
   "savedFeedFiltersLimitDescription": "Maximum number of feed filters this user role can save.",
   "@savedFeedFiltersLimitDescription": {