Pontoon: Update Japanese (ja) localization of Firefox for Android

Co-authored-by: marsf <chimantaea_mirabilis@yahoo.co.jp>

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

@@ -371,6 +371,8 @@
     <string name="browser_menu_turn_on_reader_view">リーダービューで開く</string>
     <!-- Browser menu label for turning OFF reader view of the current visited page -->
     <string name="browser_menu_turn_off_reader_view">リーダービューを閉じる</string>dsa
+    <!-- Browser menu button that reopens a private tab as a regular tab -->
+    <string name="browser_menu_open_in_normal_tab">非プライベートタブに移動</string>dsa
     <!-- Browser menu label for navigating to the translation feature, which provides language translation options the current visited page -->
     <string name="browser_menu_translate_page">ページを翻訳...</string>
     <!-- Browser menu label for navigating to the Web Compat Reporter feature, which provides users the ability to send bug reports for broken sites. -->