Hunting ground weed node is indestructible

### Testmerges

10999, 11389, 11214, 11459, 9774, 11589, 9741, 10623, 11623, 11634, 11636, 11653, 11615

### Round ID

_No response_

### Description of the bug

When the hunting ground spawns in xenos, it will spawn in about half a screen's worth of weeds, including a weed node. The weeds themselves can be destroyed, but the node itself cannot be (at least with the tools predators have, I haven't tried a flamethrower).

This is somewhat annoying as it means you cannot purify the preserve for the next person.

### What's the difference with what should have happened?

The node should be destructible via most melee weapons

### How do we reproduce this bug?

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### Issue Bingo

- [x] Issue could be reproduced at least once
- [x] Issue happened in a recent (less than 7 days ago) round
- [x] Couldn't find an existing issue about this (https://github.com/cmss13-devs/cmss13/issues)

Start by reproducing the issue in a recent round where the hunting ground spawns in xenos, then inspect the hunting-ground weed node and the destruction behavior available to predators. Confirm that ordinary weeds can be destroyed while the node cannot, and consider the issue done when the node is destructible with most melee weapons so the preserve can be purified.

Written by the indexing model from the issue text.