UC Pilot Suit Fixes: SysDef and SY-920

The SysDef and SY-920 versions of the UC Pilot suit both have badly applied material swaps, which results in the body of both suits having the same textures as the normal UC ace pilot suit. This fixes those errors, so all four variants of the suit now look as they're supposed to.

I'm not sure how often these different versions appear for players to collect in the game, so I've placed two levelled full suits of each variant in a storage crate in the Jemison Mercantile store room.

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