BottomSheet safe area insets are not set to expected values

[twstokes]

Describe the bug

The onSafeAreaInsetsUpdate callback in the BottomSheet component does not receive the expected values when a full screen sheet is rotated from portrait -> landscape -> portrait.

To Reproduce

Prerequisites:

• iOS device with a notch
• Remove the SafeAreaView from the BottomSheet (this was a stop-gap solution)

Steps to reproduce:

1. In the portrait orientation, open the block editor in WPiOS by creating a new post.
2. Tap the three dots at the top right.
3. Tap "Help & Support".
4. Observe that the top of the view is under the notch and observe the value for the result object in the callback.
5. Rotate the device into landscape.
6. Rotate the device back to portrait.
7. Observe that the top of the view is level with the notch and observe the value for the result object in the callback does not match the value from step 4 (specifically the safeAreaInsets.top value).

Expected behavior

The top of the sheet view abides by the Safe Area boundaries and safeAreaInsets is consistent for the two orientations.

Smartphone

• Device: iPhone 12
• OS: iOS 14 & 15
• Version: 1.64.0

Additional context

Please see previous discussions here.

We're currently using this library to compute the safe areas and we may need to consider an alternative approach.