Clothing HideLayerComponent breaks on clothing with multiple equipment slots

[paige404]

Description

Clothing with a HideLayerComponent will fail to properly hide the designated layers if the clothing being equipped has multiple potential equip slots.

I initially reported this here on RMC as their gas mask has both Mask and SuitStorage equip slots, so that they can be attached to a hazard vest. We tracked the issue down to Content.Shared/Clothing/EntitySystems/ClothingSystem.cs line 104. I don't know if this currently effects any items on WizDen, but it definitely impacts items on other forks and it would be helpful to sort it out here.

Reproduction

1. Add an extra equipment slot to any piece of clothing with a HideLayerComponent
2. Build, run, and put on the piece of clothing in either of the allowed spots
3. The layer will not be hidden.

Screenshots

Additional context

It may be tempting to simply change this line to see if the clothing item's slots list contains the relevant slot for that layer. However, this would result in a snout layer being hidden when a mask is equipped on the SuitStorage slot, for instance.

The solution here will need to check that specifically the slot the item is equipped in applies to that layer.