[BUG] Heat data have wrong data structures specified.

[KittenRaee]

All heat data files for stairs, walls and slabs are erroring out because of typo in data structure.

The domain is doubled and instead of being tfc_metalwork:metal…; all stairs, slabs and walls item heat files specify tfc_metalwork:tfc_metalwork/metal…

this causes item heats to be missing and wall of errors on world load, few example lines:
[13:58:56] [Render thread/WARN]: Failed to parse recipe 'tfc_metalwork:heating/metal/sterling_silver_oxidized_wall[tfc:heating]'! Falling back to vanilla: com.google.gson.JsonSyntaxException: Unknown item 'tfc_metalwork/metal/oxidized/sterling_silver_wall' [13:58:56] [Render thread/WARN]: Failed to parse recipe tfc_metalwork:heating/metal/sterling_silver_oxidized_wall[tfc:heating]: com.google.gson.JsonSyntaxException: Unknown item 'tfc_metalwork/metal/oxidized/sterling_silver_wall'
[13:58:58] [Render thread/ERROR]: item heat 'tfc_metalwork:metal/chromium_cut_wall' failed to parse. JsonSyntaxException: Unknown item 'tfc_metalwork:tfc_metalwork/metal/cut/chromium_wall'