Flamers can flame through generators

## Testmerges
#11075: 'Ticket Panel (Adminhelps & Mentorhelps)' by GeneriedJenelle at commit 6b82f92004
#12174: 'Yautja Armor Sets' by realforest2001 at commit 90c66798ed
#10414: 'Port: Harm Intent uses Auto-Fire instead of PB' by MistChristmas at commit d44502d495
#12361: 'pride scarfs in loadout' by Detective-Google at commit 6ddcf88cb8
#12140: 'Tyrargo Rift - Various Alterations' by Steelpoint at commit 13c4e6de58
#11698: 'SHARP Resharpening: Design Improvements' by MPhonks at commit 3afad4e3e6
#12464: 'LV1021: Operation Falcon's Fury - Ground Map' by Steelpoint at commit b84dc387cf
#12159: 'MP Main's Brig Expansion' by antlersss at commit 3df20bab04
#10696: '[code bounty] Sentinel rework' by cuberound at commit ea14eae874

## Round ID
35008

## Description of the bug
Not sure if this is an intended feature or not, I'm just assuming it's a bug since no other form of attack can traverse through power generators. But it seems flamers are able to flame through a generator to the other side

## What's the difference with what should have happened?
I assume the generator would have just stopped the fire from affecting any tiles on the other side.

## How do we reproduce this bug?
Delete a wall on LV-1021, the wall north of the eastmost generator unit. stand south of the generator and flame north of it.

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

## Additional details
- Author: ThiccFucc
- Admin: the steelpoint
- Note: None

Reproduce the issue on LV-1021 using round 35008's described setup: remove the wall north of the eastmost generator, stand south of it, and fire north with a flamer. Trace the flamer's area-of-effect behavior and the generator's obstruction behavior, then verify that the generator prevents fire from affecting tiles on the opposite side.

Written by the indexing model from the issue text.