Hunting Reserve floors can be spaced

## Testmerges
#9405: '[EVENT] Pathogen Confluence' by realforest2001 at commit 313d8fecc0
#9582: 'Wey-Yu Intranet Version 1.3.8' by realforest2001 at commit 7b2dfbcafc
#9590: 'Multi Z Almayer [MDB IGNORE]' by spartanbobby at commit 48f08bf673
#9427: 'external authentication system' by hry-gh at commit b615e22231

## Round ID
28428

## Description of the bug
Large explosions (like C4) are capable of destroying certain tiles in the hunting reserve such that they become space tiles; this specifically occurred with C4 planted on sandstone walls.

## What's the difference with what should have happened?
Generally speaking, the base turf for the area shouldn't be space - blowing up anything should at most result in dirt or grass.

## How do we reproduce this bug?
1) Plant C4 on sandstone temple wall in reserve
2) Space

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

## Additional details
- Author: DawsonKeyes
- Admin: Luscao
- Note: None