1.
If the name of a product on an imported EDI document is a substring
of the name of a product on the DB, said product could be used instead
of the correct one, depending on their order (i.e. ID) in the DB.

Example: There are 2 products named "Placement" and "Displacement" in
a DB. A PDF is imported. It contains a product named "Placement". If
the "Displacement" product on the DB appears before the "Placement"
one, the product on the AML will be set to the "Displacement" one.

To fix this, we first check if there is a product identically named to
the one in the EDI document.

2.
In case a product from the DB is used, if possible, the UoM used should
be the one present on the EDI document. Thus there should be a check to
ensure that the UoM category on said document matches the one of the
product's UoM before assigning it, to avoid a compatibility error.

opw-3470969

closes odoo/odoo#136109

Signed-off-by: Laurent Smet (las) <las@odoo.com>
Co-authored-by: Julien Van Roy <juvr@odoo.com>