add hit test to capture touch and send to subviews on notification cell

[albertbass86]

• Add a hitTest on notification cell and propagating touches to subviews.

Closes #2657

[jdisho]

Can we be more functional?

override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
    let view = subviews.map { view -> UIView? in
        let newPoint = view.convert(point, from: self)
        return view.hitTest(newPoint, with: event)
     }
     .compactMap { $0 }
     .first

   return view ?? super.hitTest(point, with: event)
}

What do you think?

[tabathap]

Ok

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[ghost]

#@

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