swift

0f7490aa - [CS] Avoid forming DependentMemberType with hole base in `InferableTypeOpener`

[CS] Avoid forming DependentMemberType with hole base in `InferableTypeOpener` Type substitution can form DependentMemberTypes with error base types, avoid forming a DependentMemberType with a hole base in `InferableTypeOpener`, instead form a hole that covers the entire type.