Hugger traps, etc. Layer under patches of pumpkins

## Testmerges
#9894: 'Multiz indicator' by Detective-Google at commit 5dbc10a0d2
#10340: 'New on_mobs for splints, bandages and blood overlays (Other changes to blood included)' by LC4492 at commit 14a671a4e4
#10830: 'cm-live' by hry-gh at commit 7a043c2cbc
#10895: 'Moves SDTimeAward out of staff ranks.' by realforest2001 at commit c7aee3b53b
#10872: '[RM] Temporary Multi-Z Roof Layer' by thwompa at commit 9e9443f789
#10883: 'Blocks tiles you cannot view while looking up' by Git-Nivrak at commit e83e2d8d9e
#10908: 'Adds additional checks to pouncing up a z level' by Git-Nivrak at commit b9d8d0d09b
#10926: 'Admin and XO medals.' by realforest2001 at commit 4e92970580
#10925: 'Cape River Mining Colony - Ground Map' by Steelpoint at commit 538f12ac14

## Round ID
30578

## Description of the bug
forgotten item has epic layering

## What's the difference with what should have happened?
traps shouldn't go under pumpkins.

## How do we reproduce this bug?
1. place a trap under a pumpkin
2. unfair

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

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

Reproduce the issue by placing a trap under a pumpkin in the game described by round 30578, then trace the relevant item-layering behavior. Done means traps no longer render beneath pumpkins; the payload does not name a file or test to run.

Written by the indexing model from the issue text.