Healer Drone can* build the Blight Core

## Testmerges
#9254: 'disables cade anchoring on the almayer, alternative to #9144' by psyendrocronologicalwarfare at commit 6f2fddd0df
#9405: '[EVENT] Pathogen Confluence' by realforest2001 at commit 8a300de0ba
#9582: 'Wey-Yu Intranet Version 1.3.8' by realforest2001 at commit 7b2dfbcafc
#9590: 'Multi Z Almayer [MDB IGNORE]' by spartanbobby at commit e51781b5d7
#9427: 'external authentication system' by hry-gh at commit 8ca7acda2f
#9717: 'pred gauntlet fix and cleanup' by Detective-Google at commit d3706c914e

## Round ID
28382

## Description of the bug
Healer drone is given the option to build the Blight Core (but its 0/0 so building is impossible)

## What's the difference with what should have happened?
They shouldn't have the option to build it (the funny white xeno hive core)

## How do we reproduce this bug?
Go Drone
Go Healer Strain
Build Special
See Blight Core

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

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