Fix links ui on landscape iOS

[etoledom]

Description

This PR updates the Gutenberg ref to test WordPress/gutenberg#14047.

It fixes an issue on KeyboardAvoidingView, that was adding extra bottom padding on specific circumstances:

• iOS.
• Landscape.
• Keyboard already present.
• BottomSheet presenting with a TextInput on Autofocus.
• It also had issues without Autofocus.

With some debugging I noticed a problem on the way the extra padding is calculated, so I made a simplified version of the component that will work well on the BottomSheet.

Note: The BottomSheet is not scrollable (yet).

To test:

• Check that the Links UI presents properly on Landscape mode.
• If possible, test WPiOS and Android.
• Android should work exactly as before.

[etoledom]

This issue doesn't happen on the WP apps, it seems to just affect the example apps, so I'm moving the Milestone to check it out again later.

Thank you @pinarol !

[pinarol]

so the extra padding issue is still not reproducible on my side even on example app. but there's another issue I could repro and this PR seems to fix that:

Before this PR the bottom sheet sometimes don't show itself in portrait mode:

So this looks fixed now.

There are other 2 small issues reproducible after the fix though:

1. The keyboard hide button stops working after the bottom sheet is closed until I manually go and tap to text in the block again.

2. Don't know if this is a bug but when I tap to an outside area just after opening the BottomSheet and with no changes made(because I just want to close the BottomSheet) we add the link anyway using an empty url. I think if the user hadn't entered a url text this means we shouldn't add a link and just close the bottom sheet. wdyt?

[etoledom]

Closing in favor of #701