refactor: optimize socket connection handling by removing polling transport and implementing lazy connection strategy in SocketManager for improved performance

src/components/CartItem.js

@@ -20,14 +20,14 @@ class CartItem extends Component {
         this.setState({image:window.tinyPicCache[picid],loading:false, error: false})
       }else{
         this.setState({image: null, loading: true, error: false});
-        if(this.props.socket && this.props.socket.connected){
+        //if(this.props.socket && this.props.socket.connected){
           this.props.socket.emit('getPic', { bildId:picid, size:'tiny' }, (res) => {
             if(res.success){
               window.tinyPicCache[picid] = URL.createObjectURL(new Blob([res.imageBuffer], { type: 'image/jpeg' }));
               this.setState({image: window.tinyPicCache[picid], loading: false});
             }
           })
-        }
+       // }
       }
     }
   }