feat(SW-337): logic for accesible dialog title text for lightbox

i18n/dictionaries/en.json

@@ -83,6 +83,7 @@
   "hotelPages.rooms.roomCard.seeRoomDetails": "See room details",
   "How do you want to sleep?": "How do you want to sleep?",
   "How it works": "How it works",
+  "Image gallery": "Image gallery",
   "Join Scandic Friends": "Join Scandic Friends",
   "km to city center": "km to city center",
   "Language": "Language",
@@ -232,4 +233,4 @@
   "Your level": "Your level",
   "Your points to spend": "Your points to spend",
   "Zip code": "Zip code"
-}
+}