fix: update gender handling to use speakToAs structure and adjust localization keys

locales/ja/common.json

@@ -1491,11 +1491,11 @@
       "personal_interest": "興味",
       "personal_other": "その他",
       "gender": "性別",
-      "gender_M": "男性",
-      "gender_F": "女性",
-      "gender_O": "その他",
-      "gender_N": "該当なし",
-      "gender_U": "不明",
+      "gender_masculine": "男性",
+      "gender_feminine": "女性",
+      "gender_other": "その他",
+      "gender_none": "該当なし",
+      "gender_unknown": "不明",
       "calendar": "カレンダー",
       "calendar_uri": "カレンダーURL",
       "scheduling_uri": "スケジュールURL",