[FIX] test_main_flows: make tour pass without all modules

With the current test_main_flows dependencies, the tour does not pass in community.
Since rev. odoo/odoo@32db86e the `extra_trigger` waiting for `payment_method_id` is
never reached because the onchange who is supposed to display this field hides it
because there is only one payment method on the journal.

The second payment method is added by the module account_check_printing but we don't
want to add it in the dependencies because this module is not very common.

Note that this `extra_trigger` was meant to wait for the onchange triggered by the journal
modification on the 'Register Payment' modal but this modification is not useful as the
journal is already 'Bank (USD)' by default.

closes odoo/odoo#30023