Issue Description:

The following code results in an error:

Playground execution failed:

error: StaticPropTest.playground:13:37: error: instance member 'reuseIdentifier' cannot be used on type 'ListHeaderFooterView' (aka 'UICollectionReusableView & ListCollectionHeaderFooterViewType')
case .view(let type): print(type.reuseIdentifier)
^~~~ ~~~~~~~~~~~~~~~

This would appear to be incorrect as the type is clearly a metatype and not an instance, so it is odd that the compiler would complain about an instance property being accessed here. It is of course true that `UICollectionReusableView` has an instance property with that name.

import UIKit

public protocol ListCollectionHeaderFooterViewType {
    static var reuseIdentifier: String { get }
}

public typealias ListHeaderFooterView = UICollectionReusableView & ListCollectionHeaderFooterViewType

public enum SectionAccessory {
    case title(String)
    case view(ListHeaderFooterView.Type)
}

func doEeet(accessory: SectionAccessory) {
    switch accessory {
        case .title(let s): print(s)
        case .view(let type): print(type.reuseIdentifier)
    }
}