refactor(localization): adjust feed display titles in settings

- Modify Arabic title from "عرض الموجز" to "الموجز"
- Update English description for feed settings section

Author: fulleni

lib/l10n/arb/app_ar.arb

@@ -396,7 +396,7 @@
     "@settingsAppearanceTitle": {
         "description": "Title for the appearance settings section/page"
     },
-    "settingsFeedDisplayTitle": "عرض الموجز",
+    "settingsFeedDisplayTitle": "الموجز",
     "@settingsFeedDisplayTitle": {
         "description": "Title for the feed display settings section/page"
     },

lib/l10n/arb/app_en.arb

@@ -396,9 +396,9 @@
     "@settingsAppearanceTitle": {
         "description": "Title for the appearance settings section/page"
     },
-    "settingsFeedDisplayTitle": "Feed Display",
+    "settingsFeedDisplayTitle": "Feed",
     "@settingsFeedDisplayTitle": {
-        "description": "Title for the feed display settings section/page"
+        "description": "Title for the feed settings section/page"
     },
     "settingsArticleDisplayTitle": "Article Display",
     "@settingsArticleDisplayTitle": {