how keep the hover enabled while the submenu is open

I have a simple table on my website listing devices and their characteristics (in the example at the link below there will be a shortened version of the table).

import "./styles.css";
import { SubMenu } from "./SubMenu";

const subMenuSlice = <SubMenu />;

const nodes = [
  {
    id: "0",
    name: "Samsung Galaxy",
    subMenu: subMenuSlice
  },
  {
    id: "0",
    name: "Iphone",
    subMenu: subMenuSlice
  }
];

export default function App() {
  return (
    <table>
      <tbody>
        {nodes.map((val, key) => (
          <tr key={key}>
            <td>{val.name}</td>
            <td>{val.subMenu}</td>
          </tr>
        ))}
      </tbody>
    </table>
  );
}

https://codesandbox.io/s/romantic-rgb-5t7xkq

As you can see, when you hover over any of the lines, the entire line turns gray and an additional button appears. By clicking on this button the user gets a submenu.

Description of the problem: the problem is that when the user moves the cursor to the submenu, the hover (gray) disappears from the table row. Please tell me how to keep the hover enabled while the submenu is active (open)