Previously both `AreAllStoredPropertiesDefaultInitableRequest`
and `HasMemberwiseInitRequest` checked only "current" properties
of the type but macro expansions can add new stored and/or
init accessor properties that affect this logic so we need to
make sure that macro expansions happen and new properties are
accounted for.
Note that the original idea was to use `getStoredProperties()`
but that runs into multiple circularity issues related to lazy
properties.
Resolves: rdar://112153201
