Pontoon: Update Kazakh (kk) localization of Firefox for Android

Co-authored-by: Baurzhan Muftakhidinov <baurthefirst@gmail.com>

mozilla-mobile/fenix/app/src/main/res/values-kk/strings.xml

@@ -227,6 +227,8 @@
     <string name="browser_menu_discover_more_extensions">Көбірек кеңейтулерді табу</string>
     <!-- Browser menu description that is shown when one or more extensions are disabled due to extension errors -->
     <string name="browser_menu_extensions_disabled_description">Уақытша сөндірілген</string>
+    <!-- The description of the browser menu appears when the user hasn't installed any extensions. -->
+    <string name="browser_menu_no_extensions_installed_description">Іске қосылған кеңейтулер жоқ</string>
     <!-- Browser menu button that opens account settings -->
     <string name="browser_menu_account_settings">Тіркелгі ақпараты</string>
     <!-- Browser menu button that sends a user to help articles -->