* In the Communication tab, prevent inserting multiple duplicate lines
upon switching template.
- Before, when the user was switching between templates, the lines
introduced with the last template were not removed, and the amount of
lines only kept increasing.
- Now, only the lines that are linked to a registration are kept
* In the Tickets tab, prevent inserting multiple duplicate lines upon
switching template (Ticketing) if there was already tickets linked to a registration.
- Same problem as in the Communication tab, multiple lines could be introduced.
- Now, only the lines that are linked to a registration are kept
* Add 2 tests (compute mails and tickets) to ensure those behaviors are properly
maintained in future updates. As the issue occured only in a non-saved Form when
switching event_type templates, the tests are a little low level (since we have
to check the computed results directly in the Form).
* Remove the last 2 steps of the event_tour :
- They are a bit out of scope and they break the rythm (better to end on a high note)
Task ID : 2410217
PR : https://github.com/odoo/odoo/pull/63370