[Touhou] Imply Mokou (Young) > Mokou

The bulk update request #11508 has been approved by @evazion.

create implication fujiwara_no_mokou_(young) -> fujiwara_no_mokou

Despite looking very different before she drank the Hourai elixir, Mokou is still Mokou :)

The bulk update request #11508 (forum #217955) has been approved by @evazion.

The bulk update request #11523 has been approved by @evazion.

create implication yakumo_yukari_(young) -> yakumo_yukari

If we do it for Mokou then we need to do it for Yukari as well.

The bulk update request #11523 (forum #218023) has been approved by @evazion.