* Fix name collision.
`UIView.autoPinEdgesToSuperviewEdges(withInsets:)` declared in SignalUI
was doing the same thing as `-[UIView autoPinEdgesToSuperviewEdgesWithInsets:]`
in PureLayout. Xcode 14.3 has started treating this ObjC name collision as an error.
* Fix warnings that would be errors in Swift 6.