Dropship Maps not working multiple Z-Levels

## Testmerges
#9427: 'external authentication system' by hry-gh at commit 00232abe2d
#9493: 'The Overthrall & Blooded Thralls' by MeH0y at commit 2cb1fc47de
#9590: 'Multi Z Almayer [MDB IGNORE]' by spartanbobby at commit 504ce34962
#9819: 'Cryosleep Wakeup Intro' by private-tristan at commit 08e5cd4d18
#9872: ' Multiz Bigred [MDB IGNORE]' by spartanbobby at commit 0b722e33dd
#9175: 'Multiz climbing changes' by cuberound at commit 8dd1b08d14
#8878: 'Whiskey Outpost Xenofication' by Unknownity at commit cf7272d66b
#9193: 'Trijent Z levels' by BOBAMAx at commit a444e49822

## Round ID
28687

## Description of the bug
When using the dropship console there is no way to change the currently viewed maps on the dropship display.

## What's the difference with what should have happened?
I didn't know if Trijent was multiple Z-Level. But I would have expected there to be buttons to change layers.

## How do we reproduce this bug?
Dropship or Gunship
Open weapons console- Maps (On A multiple Z-Level map) - :(

## Attached logs
```
N/A
```

## Additional details
- Author: R9b1t
- Admin: Detective Google
- Note: this was during a multiz trijent test