el-table @row-contextmenu event is not working on iPhone mobile.

In el-table, there is an event `@row-contextmenu="rowContextMenu"` which is implemented for right-click event. This works on Android and Windows touchscreen devices but not on iPhones. So, I am trying to add a custom touch event to the el-table as below:

```

```

I need to get trigger the events @touchstart and @touchend when I long-press the table row.
1. Please help me to get the solution for why the existing @row-contextmenu is not working on iPhones.
2. If I want to implement @touchstart and @touchend events on el-table rows, how to implement them?