Rename mash kyrielight (alter)

BUR #42409 is pending approval.

rename mash_kyrielight_(alter) -> mash_kyrielight_(alter)_(fgo_alternative)

This Mash is from a Doujin so I'd suggest appending that to her tag to avoid any confusion, Not sure if putting the full Fate/Grand Order Alternative would be better, I'll edit the BUR if so.

BUR #42410 is pending approval.

create implication mash_kyrielight_(alter) -> mash_kyrielight

She's a fan made Alter version of Mash, not sure how including this in the main BUR would effect it if at all so made it a secondary one.