* Configure scrollEdgeAppearance with opaque background

I noticed there is now an animation that occurs when pushing the first
view on a stack. This will happen with both:

`largeTitle: { visible: true }`
and
`largeTitle: { visible: false }`

It seems caused by the setting of the `scrollEdgeAppearance` background
without first configuring it using `configureWithOpaqueBackground`.

I also added checks for iOS 13 since these APIs require iOS 13.

* Update lib/ios/TopBarAppearancePresenter.m

Co-Authored-By: Yogev Ben David <yogevbd@wix.com>

* Update lib/ios/TopBarAppearancePresenter.m

Co-authored-by: Yogev Ben David <yogev132@gmail.com>
Co-authored-by: Yogev Ben David <yogevbd@wix.com>

Resolves largeTitle background color from topBar.title.background.color

Co-authored-by: Guy Carmeli <guyca@users.noreply.github.com>

This commit changes how stack child options are applied on iOS 13. Until now, options were applied directly to the navigationItem of the stack which is shared between all children.
This commit applies options on the navigationItem of each child instead. This fixes issues with color transitions when popping and pushing children to the stack.

* Fix topBar transparent background on iOS 12

* Fix unit test iOS destination

* Remove main window backgroundColor
* Better interface for TopBarPresenter