Force block inserter to re-render on device rotation

[etoledom]

This PR uses onLayout and the internal State of inserter menu to force a re-render of the component on device rotation.

gutenberg PR: WordPress/gutenberg#18101

Fixes: #1491

• Run the example app (iOS and Android).
• Press (+) to show the block inserter.
• Check that the layout looks fine.
• Rotate the device.
• Check that the layout rearranges.

Note: There's a small jump after the rotation while the layout changes. As a hotfix is probably good enough, but I'd like to check this out later on.

Update release notes:

• If there are user facing changes, I have added an item to RELEASE-NOTES.txt.

[hypest]

Tested on few of my android devices:

Tests:

1. Open Inserter in portrait and rotate. Make sure the Inserter still looks OK in landscape. Rotate back to portrait, make sure it still looks OK.
2. Open Inserter in landscape and rotate. Make sure it looks OK. Rotate back and should still look OK.

Device:

1. Nexus 5X (Android 7.1.2): all tests OK ✅
2. Samsung Galaxy S7E Android 8.0.0): all tests OK ✅
3. Pixel 2 XL (Android 9): all tests OK ✅

[pinarol]

Works great! 🎉 Thanks @etoledom for the PR!
Before this change I was able to reproduce the problem on iPhone 8. With this PR the problem is fixed. BottomSheet refreshes its layout when I rotate the device.

Tested with WordPress-iOS app

[etoledom]

Thank you! 🙏