Investigate usages of "instanceof PermanentToken"

Followup from #14900. Previous work #14920 . Instanceof checks only for game engine, card logic should use `isToken()`. Gray area for effects that need to only apply to cards, but those might be mostly covered by #14979 anyway.

Incomplete list of things to check
- [ ] When mutating over a token creature, the engine correctly doesn't consider it a token anymore, but the client GUI still incorrectly displays "T. " on the type line.