odoo / odoo

In the first days of the month, many of the previous month's invoices
could still to be posted since the lock date is not yet set to the last
day of the previous month. To avoid the user having to modify the
default accounting date on each such bill, detect whether the conditions
allow the invoice to be posted on the very last day of the oldest
possible month, and then adapt the accounting date to the last day of
that month.

task-2575560

closes #72934

Signed-off-by: Laurent Smet <smetl@users.noreply.github.com>