stop follow on screen jump (e.g. from letter)

[FluffierThanThou]

Reported by: [CS.DEALS] GnomeYork
Description:
Small bug, whenever I'm following someone and a letter appears, like a raid, trying to jump to their location results in a rapid jump and sudden return to the pawn I was following.

[diannetea]

I wanted to add a couple of other instances this should break away for. If a caravan does something on the world map that would normally change the map automatically (like being ambushed) it switches back to the map and pawn I'm following. I'd also like if it would stop if I do something to manually switch to another pawn like double clicking their portrait. I think there may be one other instance I've noticed it doesn't break away when it presumably should so I'll update if I come across it again.