Fix keys for MTGA update in 2021/8/24

[poslogithub]

• [dataloc*.mtga] langkeys are null in 11/21 patch, so use isoCode instead.
• [datacards*.mtga] Keys below are not required now, so add try-except logic.
  • castingcost
  • colorIdentity
  • types
  • subtypes
  • rarity
  • isToken
  • abilities
• [datacards*.mtga] Keys below are renamed.
  • abilityId -> Id
  • textId -> TextId
• [datacards*.mtga] hiddenAbilities are added