Display a modal when moving a scheduled message or conversation to trash
Display a modal when moving a scheduled message or conversation to trash

Checking if message is a scheduled one or if the conversation contains a scheduled message to display a modal
The modal informs the user that moving the message to trash will cancel its sending
If all selected elements moved to trash are scheduled messages/conversations, we do not display the Undo button

MAILWEB-2473

ProtonMail/WebClient,ProtonMail/WebClient,ProtonMail/WebClient