fix(Android, Stack): Fix formSheet - SafeAreaView integration

[t0maboro]

Description

Update the logic of returned insets for SAV component used with the formSheet to define the available space on Android. From now on, the size of the formSheet is constrained by the maximum detent, and the content size equals the formSheet size with insets coming from systemBars or ime subtracted, depending on the test case.

Fixes: https://github.com/software-mansion/react-native-screens-labs/issues/457

Changes

• Updated the logic for consuming insets in the SheetDelegate
• Updated the definition of SheetBehavior for 3 detents - constraining the size with maxHeight
• Added a new example for testing.

Screenshots / GIFs

Here you can add screenshots / GIFs documenting your change.

You can add before / after section if you're changing some behavior.

Before

before.mov

After

after.mov

Test code and steps to reproduce

Added Test3336 for testing.

Checklist

• Included code example that can be used to test this change
• Ensured that CI passes