fix: Update notification titles to include conversation context in English and Spanish translations

Author: rsmithlal

app/views/better_together/new_message_notifier/notifications/_notification.html.erb

@@ -1,5 +1,5 @@
 <!-- app/views/better_together/new_message_notifier/_notification.html.erb -->
-<%= render layout: 'better_together/notifications/notification', locals: { notification: notification, notification_title: t('better_together.new_message_notifier.new_message', conversation_title: notification.conversation.title), notification_url: notification.url } do %>
+<%= render layout: 'better_together/notifications/notification', locals: { notification: notification, notification_title: t('better_together.new_message_notifier.new_message'), notification_url: notification.url } do %>
   <p class="mb-1 message-content">
     <strong><%= policy(notification.sender).show? ? link_to(notification.sender, notification.sender, class: 'text-decoration-none') : notification.sender %></strong><br>
     <%= notification.message.content.to_plain_text.truncate(50) %>

config/locales/es.yml

@@ -1542,7 +1542,7 @@ es:
       accepted: debe ser aceptado
       already_confirmed: ya ha sido confirmado, por favor intenta iniciar sesión
       blank: no puede estar en blanco
-      confirmation: no coincide
+      confirmation: no coincide con %{attribute}
       confirmation_period_expired: necesita confirmarse dentro de %{period}, por favor
         solicita una nueva
       empty: no puede estar vacío