Notification Message and Notification Banner don't emit scale-close Event

[lukascorona]

Describe the feature request
Currently, unlike the scale-modal, no scale-close event is emitted when the close button is clicked. Here it would be desirable that a corresponding event is emitted so that a controlled underlying state can be updated accordingly.

Describe the use case
We want to use the scale-notification-message to display notifications that get stored locally. However, when clicking the close icon, we need to mark them as read so that they are not displayed again when the page is reloaded.

Describe alternatives you've considered
As an alternative, a slot for a custom close button could be provided. Consistent event emitting similar to the scale-modal would certainly be more understandable though

Additional context

The image shows our planned usage for the notifications. A click on the close button should permanently delete the respective notification from the quick menu

[acstll]

I would be in favor also of emitting scale-close 👍 — thanks for opening this @lukascorona

[nowseemee]

3.0.0-beta.105 has this addition