Before this commit, there was a discrepancy between
many2many_tags widget and regular many2many list
That is, in tag mode, when someone had read access alone on the comodel
he could modify the members of the m2m relation on the current model
Which couldn't be done in m2m list
After this commit, it is possible in a m2m list to add
records to a relation, even if we don't have CRUD access on the comodel
Task 44074
closesodoo/odoo#40194
Signed-off-by: Aaron Bohy (aab) <aab@odoo.com>