[iOS] Make sure the Window is available #28013
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tj-devel709
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platform/iOS 🍎
area-controls-window
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Description of Change
There is an issue where the KeyboardAutoManagerScroll.AnimateHidingKeyboard is looking for the NextResponder after the Window has been garbage collected. These changes will make sure if the Window has been GC'd, we will stop the search and return null.
This PR still needs to be tested
Issues Fixed
Fixes #dotnet/macios#21648