[FIX] web_tour: load xml at test start
[FIX] web_tour: load xml at test start

Before this commit, the template of the "Tip" widget was loaded on test runtime
and caused a concurrency issue.

Now, the template is loaded before the test suite is launched and is ready when
the test is executed.

closes odoo/odoo#48589

Signed-off-by: Aaron Bohy (aab) <40b904fd8852297daeaeb426b1bca46fd2454aa3@odoo.com>

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo