`death.attack.sulfurCubeHot.item` displays as a raw translation key

The death message death.attack.sulfurCubeHot.item is untranslated.

Due to the fix for MC-308254, dying to sulfur cubes holding renamed items in their main hand and magma blocks in their body slot now produces this death message instead.

How to reproduce:

1. Execute the following command:

   /summon minecraft:sulfur_cube ~ ~ ~ {equipment:{mainhand:{id:"minecraft:stick",count:1,components:{"minecraft:custom_name":"\"Test\""}},body:{id:"minecraft:magma_block",count:1}},Size:1}

2. Switch to Survival mode.

3. Come into contact with the sulfur cube enough times until you die.
   -> ❌ The death message is death.attack.sulfurCubeHot.item, with no translation.

Expected result:

The death.attack.sulfurCubeHot.item string would have a translation.

Observed result:

The death.attack.sulfurCubeHot.item string is untranslated.