[FIX] pos_hr: Avatar display error

If the user only has "Point of Sale" permission but not "Employees" permission, the image will not be displayed using the link "/web/image/hr.employee/${cashier.id}/avatar_128"
instead use "/web/image/hr.employee.public/${cashier.id}/avatar_128"

closes odoo/odoo#130566

X-original-commit: 152e1a360fad3de1bc5363bf476e26f48563e5c0
Signed-off-by: Joseph Caburnay (jcb) <jcb@odoo.com>

addons/pos_hr/static/src/overrides/components/cashier_name/cashier_name.js

@@ -13,7 +13,10 @@ patch(CashierName.prototype, {
     get avatar() {
         if (this.pos.config.module_pos_hr) {
             const cashier = this.pos.get_cashier();
-            return `/web/image/hr.employee/${cashier.id}/avatar_128`;
+            if (!(cashier && cashier.id)) {
+                return "";
+            }
+            return `/web/image/hr.employee.public/${cashier.id}/avatar_128`;
         }
         return super.avatar;
     },