[FIX] sale_management: uom not displayed to the customer

The uom must be displayed to the customer in any case.
Otherwise portal user couldn't sign their online quote if
they couldn't read the uom (ex: a contract of one year or one day)

Fine tuning of https://github.com/odoo/odoo/commit/342dd5ffb8281cb5c37fea4fb96db2b570c30122



opw:2411108

closes odoo/odoo#65010

Signed-off-by: Simon Goffin (sig) <sig@openerp.com>

addons/sale_management/views/sale_portal_templates.xml

@@ -101,7 +101,7 @@
             </t>
             <t t-else="">
                 <span t-field="line.product_uom_qty"/>
-                <span t-field="line.product_uom" groups="uom.group_uom"/>
+                <span t-field="line.product_uom"/>
             </t>
         </xpath>