[MIRROR] Fixes floating pixels on railings (#2391) (#3233)

* Fixes floating pixels on railings (#83118)

## About The Pull Request
Someone pointed this out earlier, and I agree random pixels es no bueno

![image](https://github.com/tgstation/tgstation/assets/143908044/786f4dc9-8193-47a9-936e-e95f42e1817c)
![image](https://github.com/tgstation/tgstation/assets/143908044/72002dda-f984-4d8a-a1a7-8b5837cea6b6)

## Why It's Good For The Game
It's not

## Changelog
:cl:
fix: Removed stray pixels appearing on certain parts of railing
/:cl:

* Fixes floating pixels on railings

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Co-authored-by: NovaBot <[email protected]>
Co-authored-by: AMyriad <[email protected]>