Prepare templates

Provided tokens

Token	Description
[push_notification]	The push notification.
[push_notification:channel]	The notification channel.
[push_notification:recipient]	The recipient user account.
[push_notification:entity]	The entity.
[push_notification:title]	The title of the entity.
[push_notification:display_mode]	The display mode for the entity.
[push_notification:subject]	The subject of the notification.
[push_notification:body]	The body of the notification.
[push_notification:text_format]	The text format of the notification.
[push_notification:is_html]	The flag if the body of the notification is in html.
[event]	The event.
[event:machine_name]	The machine name of the ECA event.
[session_user]	The user account that dispatched the event, regardless if ECA is processing models under a different account. This is only available if ECA is configured to always run under a specific account.

Fires once before the language loop when Push Framework prepares notification templates. Use this to alter the display mode, subject, body, text format, or HTML flag before any language-specific rendering begins.

The [push_notification:subject], [push_notification:body], [push_notification:text_format], and [push_notification:is_html] tokens are available alongside the base tokens (channel, recipient, entity, title, display_mode).