Fix date picker dismissing when tapping on date picker in .inline style

[joeboyscout04]

Fixes #532 .

It looks like the issue was introduced in #528, where the tap gesture was moved to the window. The action sheet itself also needs to be exempted from the dismissal tap gesture to work with a datePickerStyle = .inline.

[noorulain17]

Thanks for the contribution @joeboyscout04 🎉
Please share a video representing the fix with all datePickerStyles

[joeboyscout04]

Here's some videos which I took showing the results. Please forgive the low video quality, I had to compress them pretty hard as I can only upload max 10mb videos here at Github. I modified the demo project to do the testing.

Here's the original behavior. Note that in .compact and .inline styles, tapping some date dismisses the picker rather than selecting the date.

Old_behavior.mov

In the new behavior, you should be able to select a date in all datePickerStyles

New_behavior_iphone.mov

Here's the new behavior on iPad (popover).

New_behavior_ipad.mov

[Wei18]

@joeboyscout04
Thanks! 🎉

[mlch911]

There would be a problem when the superview is not full-screen size.
We can disable the gesture in gestureRecognizerShouldBegin:.