[Swiftify] Don't create safe wrapper for autoreleasing pointers (#81568) (#81590)
_SwiftifyImport doesn't know how to handle
AutoreleasingUnsafeMutablePointer, so we should not attach any
.countedBy information for pointers that are imported as this type.
This also adds defensive checks against adding .countedBy to any pointer
type that _SwiftifyImport doesn't know how to transform.
rdar://151479521