[MIRROR] Fixes lobby menu offset pixel (#2019) (#2918)

* Fixes lobby menu offset pixel (#82660)

## About The Pull Request
Someone pointed out that the bottom of the title screen had an offset
pixel, so I went ahead and fixed it

## Why It's Good For The Game
Before ----> After

![image](https://github.com/tgstation/tgstation/assets/143908044/bc4cd2dd-558d-4458-9a17-3cde73ce7c6f)
![image](https://github.com/tgstation/tgstation/assets/143908044/03fb0571-804b-4f31-ae86-8bc4b6479a04)


## Changelog
:cl:
image: Fixed the lobby menu's collapse button being offset by a pixel
/:cl:

* Fixes lobby menu offset pixel

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