[FIX] event: include timezoned event date_end in registration open computation

Purpose of this commit is to try to lessen random conditions being concatenated
in templates by correctly computing event_registrations_open field that is
now correctly based on

  * event.date_end -> if event is done, registrations are not open anymore;
  * event.start_sale_date -> lowest start date of tickets (if any; start_sale_date
    is False if no ticket are defined, see _compute_start_sale_date);
  * any ticket is available for sale (seats available) if any;
  * seats are unlimited or seats are available;

Some better timezone computation is included even if it could be done better.

Task ID 2228189
Community PR odoo/odoo#48652

X-original-commit: a11af9074499465b6dd8ad1400e60c7af96e21c7

0 files changed, 0 insertions, 0 deletions