## About The Pull Request
Fixes#86899
Assigning head positions doesn't use the `available_occupations` list
and instead just iterates through all command roles direct from some
department job helper, jumping over any that are at capacity.
This means the `available_occupations` list doesn't get updated when
head positions are assigned and can lead to an edge case where two
players can both get a single-slot job. The first player gets it via
`fill_all_head_positions_at_priority()`. The second player gets it via
being given a random role when any now-full head job doesn't get removed
from the `available_occupations` list.
There are many ways to fix this. The solution I've opted for is removing
command roles from the `available_occupations` list entirely, letting
`fill_all_head_positions_at_priority()` handle the logic for this
exclusively.
## Why It's Good For The Game
I feex.
## Changelog
🆑
fix: Fixes a bug where the game would assign multiple players to
single-slot command roles.
/🆑
1a3a6e88f8