[Type Resolution] Resolve (any P.Type).Type as the metatype of an existential metatype.
#42380
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existential metatype. Until we model ExistentialMetatypeType as ExistentialType(MetatypeType), type resolution needs to look through the instance type repr when resolving a metatype. Otherwise, there's no way to distinguish between P.Type.Type, which is an existential metatype, and (any P.Type).Type, which is the static metatype of an existential metatype.
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Until we model
ExistentialMetatypeTypeasExistentialType(MetatypeType), type resolution needs to look through the instance type repr when resolving a metatype. Otherwise, there's no way to distinguish betweenP.Type.Type, which is an existential metatype, and(any P.Type).Type, which is the static metatype of an existential metatype.Resolves: rdar://91784600