Like a5f3318f3b, this proves that the new dispatcher conversion works for fire-and-forget style dispatches too. This is another obvious-if-broken and generally safe conversion to make.
Other actions which can be dispatched this way have been excluded for reasons mentioned in the Action enum's comments.
We already intercepted most of the cases where no integration manager was present, though there was a bug in many components where openAll() would be called regardless of an integration manager being available.
The integration manager being disabled by the user is handled in the IntegrationManager classes rather than on click because we have quite a few calls to these functions. The StickerPicker is an exception because it does slightly different behaviour.
This also removes the old "no integration manager configured" state from the IntegrationManager component as it is now replaced by a dialog.
