fix: Convert Date to string for all remaining date fields in stock pages

app/(main)/stock/commandes/page.tsx

@@ -644,11 +644,11 @@ const CommandesPage = () => {
 
                             <div className="field col-12 md:col-4">
                                 <label htmlFor="dateCommande">Date commande</label>
-                                <Calendar 
-                                    id="dateCommande" 
-                                    value={order.dateCommande} 
-                                    onChange={(e) => setOrder({...order, dateCommande: e.value || new Date()})} 
-                                    showIcon 
+                                <Calendar
+                                    id="dateCommande"
+                                    value={order.dateCommande}
+                                    onChange={(e) => setOrder({...order, dateCommande: e.value?.toISOString() || new Date().toISOString()})}
+                                    showIcon
                                 />
                             </div>