any tiles can be placed ontop of catwalk tiles

## Testmerges
#8442: 'Removes devour, replaces it with haul. #2737 Revival' by casperr04 at commit fd00048dd6
#7645: 'adds poll subsystem, entities and ui' by hry-gh at commit ddd2f66fd9
#8470: 'faster cellauto explosions' by jupyterkat at commit 5122245dd1
#8378: 'Yautja Ship - Complete Remake & more...' by Zenith00000 at commit 9fac4b5efb
#8492: 'chunk tgui topic payloads on 516' by hry-gh at commit f003f713b4
#8181: 'Nerfs playable huggers' by Git-Nivrak at commit 1e0dfdf9d9
#8606: 'refactors audio player (by adding a 516 version with nicer code)' by hry-gh at commit c08ed16336

## Round ID
26617

## Description of the bug
if you get any sort of tile (even other catwalk tiles) you can place them ontop of catwalk tiles without removing it. this deletes the catwalk tile. duplicate of #478 but that issue was closed and you can still do it :(

## What's the difference with what should have happened?
I shouldnt be able to place other tiles on existing catwalk tiles without removing it first

## How do we reproduce this bug?
1. find catwalk
2. place any tile (even other catwalk tiles)
3. see error

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

## Additional details
- Author: Onetoughcreampuff
- Admin: SmellyHippie
- Note: None