Transparent head texture rendering is inconsistent with how Minecraft displays them. #231
Description
Hi!
I recently noticed that certain skins (such as the current skin of rdsmln, UUID 0c20d9ce-9ca3-48dd-9696-8adb81a0f718) have fully transparent head textures, which in-game show as all black, but through imgd they are just fully transparent. This causes some weird effects such as messages in a Minecraft -> Discord bridge that use the service appearing to have broken / missing avatars, which isn't obvious at first because the skin renders differently in Minecraft. I believe that it would be nicer to try and emulate the behavior of Minecraft, which is to render these as solid black.