Duplicating Wheelchairs When Joining Crew

[hexed crest]

Description
If a hologram applicant has a wheelchair, it spawns two wheelchairs when they join the crew.

Reproduction
-Have applicant who has the wheelchair trait appear on a ship
-Accept applicant
-Notice an extra wheelchair.

[hasty tinsel]

https://github.com/new-frontiers-14/frontier-station-14/pull/3525 boop