Black photo from Z level below

## Testmerges
#9894: 'Multiz indicator' by Detective-Google at commit a1fd9677a0
#9978: 'Xeno Time Checks' by realforest2001 at commit f86f8e3705
#9872: ' Multiz Bigred [MDB IGNORE]' by spartanbobby at commit cd86d53c29
#9861: 'M10 revamp, new attachments & additions.' by Zenith00000 at commit e1c802a2cc
#9405: '[EVENT] Pathogen Confluence' by realforest2001 at commit aa797ef03e
#7023: 'Research Rework Part Two: The Contract System.' by kiVts at commit ea3b82d9ab
#10297: 'Adds (very basic) Zombie Hostile Mobs' by Steelpoint at commit bce8fea083

## Round ID
29324

## Description of the bug
taking a picture of a z level below gives the tiles just an entire black stile.

## What's the difference with what should have happened?
it should be able to take pictures of z levels below

## How do we reproduce this bug?
get a camera
go up a z level
take a picture of the z level below
black picture

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

## Additional details
- Author: BorisTheLove
- Admin: LTNTS
- Note: None

No source files or tests are named. Reproduce the issue with a camera on one z level while viewing the level below, then trace the camera's z-level image capture and rendering entry points. Done means the resulting photo shows the lower-level tiles instead of an entirely black image.

Written by the indexing model from the issue text.