Set KStatusNotifierItem status to Active

A KStatusNotifierItem's status is Passive by default, meaning:

    Nothing is happening in the application, so showing this icon is not
    required.

The application is expected to set it to Active at some point:

    The application is doing something, or it is important that the icon
    is always reachable from the user.

Although we never really "do something", the second half about needing
the icon to be reachable corresponds to our situation.

BUG: 132476