Impossible to tell if user intentionally closed a notification

[mbwestphal]

Currently it is impossible to tell if a user intentionally closed a notification by clicking on the "close" button or if "closeSnackbar" was invoked from somewhere in the application for whatever reason. Both will deliver reason "instructed".

If I were to create my own "close" button using the action or content options I would be able to just store this information onClick but I do not want to create my own components. That is part of the reason I am using notistack.

Expected Behavior

A "user" reason will be given onClose when the user presses the "close" button.

Alternatively, let us provide our own close reason as a second parameter to closeSnackbar.

Current Behavior

The "instructed" reason is given.