Create a "fix" script to resolve units stuck waiting for demonstrations

[Bumber64]

Units can show up at a guild hall and wait for a skill demonstration. However, if nobody else visits the guild hall, then the unit can sit there doing nothing for an unreasonably long time (until they get hungry, etc.). This wastes time that could be used doing something productive, as well as further time to fix all the needs that have built up while they were staring off into space.

We need to figure out how to detect if a unit has been waiting too long in this state, and then redirect them to a different activity they have access to. E.g., to someone else waiting on a different demonstration (if that guild is open to all), or something they can do solo that fulfills whatever needs causes them to attempt the demonstration to begin with.