In expense flow the taxes are calculated as included in price.
Prior, to guarantee it, we had domain - ('price_include', '=', True) on taxes.
That could be inconvenient from user's point of view, as they first needed to
define taxes with price_include = True. That led to users duplicating taxes
between included/excluded just so that they could use taxes in expense.
Now we force taxes to act like price_include = True. This way, user does not
need to define taxes just for expense's purposes and still taxes will be calculated
as it supposed to be - included in price.
task - 2850882
closesodoo/odoo#94392
Signed-off-by: Kevin Baptiste <kba@odoo.com>