Facehuggers do not take damage when existing on Neomorph mycelium

## Testmerges
#9582: 'Wey-Yu Intranet Version 1.3.8' by realforest2001 at commit 7b2dfbcafc
#9590: 'Multi Z Almayer [MDB IGNORE]' by spartanbobby at commit 9c49850666
#9427: 'external authentication system' by hry-gh at commit 13c0aaaf5d
#9549: 'Tweaks the mortars ranges' by Nihisohel at commit 874a51ef97
#9493: 'The Overthrall & Blooded Thralls' by MeH0y at commit ce64168371
#9302: 'Removes burst from the custom m4ra' by Red-byte3D at commit eea16cd805
#9780: 'Xeno Hauling Stuns - Option 2' by realforest2001 at commit 33c8a333c0
#9405: '[EVENT] Pathogen Confluence' by realforest2001 at commit b390550ab9

## Round ID
28500

## Description of the bug
When moving from regular weeds to mycelium, facehuggers stop losing health, as if they were still on weeds.

## What's the difference with what should have happened?
Facehuggers existing off weeds slowly lose life. I expected to lose life when on mycelium blight.

## How do we reproduce this bug?
1) Join as playable facehugger
2) Walk on mycelium blight
3) Witness the health not dropping

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

## Additional details
- Author: Lamedonyx
- Admin: Forest2001
- Note: None