Feature Request

For menu's that have multi-select list items, the menu should remain open as the user interacts with items instead of closing immediately when the user clicks on an item.

Proposed solution

An option should be provided (e.g. isPersistent or autoClose) to determine whether or not the menu should close its surface when an item is clicked.

Alternatives considered

The user could cancel close events, but that would require more logic to configure for a simple use case than a flag.

Additional context

See material-components/material-web#1353 for the downstream feature request.