This method plays the standard system "keyboard click" sound when a user taps an input view or keyboard accessory view, with certain restrictions:

• The user has enabled "Keyboard Clicks" in Settings / Sounds
• The UIKit.UIView being tapped implements UIKit.IUIInputViewAudioFeedback and overrides IUIInputViewAudioFeedback.EnableInputClicksWhenVisible to return true.

This can be used from a background thread.