google_calendar: before this commit, the timezone of recurring events was not properly tested. when an recurrence was created in Odoo, the start and stop datetime were incorrectly set before https://github.com/odoo/odoo/pull/76546/commits/182f0cab58dd4e8a8ce1a3af5eaf8c3d8bea51e6. This commit test this behavior. calendar: add recurrence information in mail invitation https://github.com/odoo/odoo/commit/bc9bc2686ca142a7348dc48e0b7f8e74fdd42e10 removed the recurrent template variable that is used to add recurrence information in the mail invitation. FW port of https://github.com/odoo/odoo/pull/76546 closes odoo/odoo#77559 X-original-commit: e1d1e9ee20e6de4c9b9873e533ff9c89d7b392ef Signed-off-by: Yannick Tivisse (yti) <yti@odoo.com> Signed-off-by: Arnaud Joset <arj-odoo@users.noreply.github.com>