Exploding grass

## Testmerges
#9894: 'Multiz indicator' by Detective-Google at commit a1fd9677a0
#9978: 'Xeno Time Checks' by realforest2001 at commit f86f8e3705
#9872: ' Multiz Bigred [MDB IGNORE]' by spartanbobby at commit cd86d53c29
#10379: '[TM ONLY]Disable queen seethrough' by Blundir at commit 55c6c872b1
#10376: 'CIA Tweaks and Fixes' by realforest2001 at commit 11f8bc9a64
#10280: 'The Smartgun Update' by Blundir at commit bbc32e4893

## Round ID
29455

## Description of the bug
I am not sure whether you should be able to plant C4 on the grass patches

## What's the difference with what should have happened?
Should you be able to?

## How do we reproduce this bug?
1) Get C4
2) Get grass
3) Profit

## Attached logs
```
You are trying to plant plastic explosives on the tallgrass!
LCpl Kameron Minnie nods.
You plant plastic explosives on the tallgrass! Timer counting down from 10.
```

## Additional details
- Author: BlackSwanny
- Admin: Vending Machine
- Note: None

The report provides no file, test, or entry point. Reproduce the steps with C4 and tallgrass, then confirm with maintainers whether planting explosives on grass is intended; done means the behavior matches the decided rule and the reproduction is covered by an appropriate test.

Written by the indexing model from the issue text.