As a user accessing only the purchase module, create a request for
quotation, add a line with a tax and a cost > 0.
Confirm the RfQ to create the purchase order.

Before this commit, the user get a access error on account.account.tag
This patch add read access on this model for purchase users

opw : 2466688

closes odoo/odoo#67072

Signed-off-by: William Henrotin <Whenrow@users.noreply.github.com>