Don't ping actor when an infraction DM fails to send

[MarkKoz]

Would anyone miss this functionality?

[sco1]

Kill it with fire

[SebastiaanZ]

We're still discussing whether or not we should actually remove this internally.

[SebastiaanZ]

We have discussed this with the moderation team and no one seems to be opposed to removing the "actor ping".

To still get explicit feedback about DMs failing to be delivered to the user, we would like to add an emoji to the infraction confirmation message in a similar style to the "swooshing" envelope we use to signal that a DM was successfully sent:

An initial design for the "fail" emoji is:

[SebastiaanZ]

The emoji has been added as :failmail: (ID of 633660039931887616) to the emoji server.