[FIX] point_of_sale: empty name check when editing customer info

User is not allowed to save an empty name for the customer details.
If tried, an error message is shown. This feature has been accidentally
dropped after the pos-owl-refactoring. We are restoring this behavior
in this commit.

closes odoo/odoo#60793

Signed-off-by: pimodoo <pimodoo@users.noreply.github.com>

addons/point_of_sale/static/src/js/Screens/ClientListScreen/ClientDetailsEdit.js

@@ -44,6 +44,11 @@ odoo.define('point_of_sale.ClientDetailsEdit', function(require) {
                     processedChanges[key] = value;
                 }
             }
+            if (!processedChanges.name) {
+                return this.showPopup('ErrorPopup', {
+                  title: _('A Customer Name Is Required'),
+                });
+            }
             processedChanges.id = this.props.partner.id || false;
             this.trigger('save-changes', { processedChanges });
         }