iron, chainmail and gold armor can be smelted in the furnace or blast furnace to turn into their nugget, even with netherite trim on, although netherite cannot burn. related to MC-176618

step to reproduce:

step 1: place the smithing table, then put armor trim, iron armor and netherite ingot into the smithing table, then shift and left-click on the output
step 2: place the furnace, then put that armor in the furnace and then put the fuel
expect: nothing happens
reality: the iron armor started to smelt