PURPOSE
Subject field on mailing has not the same use in email marketing (subject of
emails) and in SMS maketing (used internally as there is no subject in SMS).
Purpose of this commit is to improve mailing form view to better distinguish
email and SMS flows.
SPECIFICATIONS
This commit changes helper for mailing subject and update its label according
to mailing_type (mail or sms), as well as the sms content field to enable emoji
support in mailing subjects. This is done through a fake sms_subject field
that is a text without emojis while standard subject allows emojis. Helpers
depends on the displayed field.
Override CRUD to synchronize sms_subject on subject to have only one field
used to store data.
Also allow emojis in SMS content, suing the enable_emojis option.
LINKS
Task ID-2224393
PR #49096