Fixing a crash in iOS 9.3.5 when we have a layer with WebView getting… #20328
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… deallocated (#20285)
In case of iOS 9.3.5 when we show a web view and deallocate the layer it is trying to release memory associated with WKWebView instance, but it hadn’t retained it in the first place. This results in a crash. This commit fixes that crash.
Removing the autorelease and retain parts from the WKWebView instantiation.
Changes so that we can remove the retain from the property declaration and depend only on manual retain and release of memory