Disabling access control is fundamentally incompatible with
deserialization safety. Let's turn off safety automatically when in use.
This was reported by a few tests:
stdlib/Dictionary.swift
stdlib/Set.swift
stdlib/SetOperations.swift.gyb
stdlib/SwiftNativeNSBase.swift
Clients of a resilient module using opaque types don't need access to
the underlying type unless it's used in an inlinable context. Plus, the
underlying type can reference internal details which can lead to crashes
when they reference implementation-only dependencies. To clean up this
behavior, let's only serialize the underlying type if used by an
inlinable function.
rdar://105128784
