Customizer: "Hyrule Castle Key" item does not work correctly

[cassidoxa]

Description of problem: Picking up a Hyrule Castle Key item in one of the three Hyrule Castle chests in non-keysanity does not increment the key count for HC or Sewers. This item works as intended in keysanity, or in non-keysanity when placed outside if HC. The Sewers Key seems to work correctly in all circumstances.

Also, I have noticed that I do get a break on write to the HC key counter location in SRAM ($7EF37D) when I open a chest containing the Hyrule Castle Key item in a HC chest. But the count remains the same and I'm unsure if this is some vestige of vanilla, a bug in the rando ROM, or something else entirely.