Notification needed when using Batch Update of Participants via Profile (currently only when using Change Participant Status function)

As per Issue 12277, notification has been added when using the batch "Change Participant Status" function advising the user that emails will be sent to all participants (if the Confirmation Email option is enabled for Online Events).

Users can also batch update participant status with the reserved profile "Participant Status". In this case, no warnings are provided about the impending bulk emails about to be sent. Since the Profile is reserved it is difficult to avoid the case where users select that option.