* Fix holo signs being able to be frozen (#74103)
🆑 coiax
fix: Holosigns, like the atmos holofan, can no longer be frozen by low
temperature water vapour.
/🆑
Seen this a couple of times where a holofan's been "frozen" which is
quite silly.
This won't actually _do_ anything until #74102 is merged though, but
let's keep our changes separate.
* Fix holo signs being able to be frozen
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Co-authored-by: Jack Edge <yellowbounder@gmail.com>
f149912dbd