* use bottom sheet api instead of returning null when hidden
* dedupe inside modal dismiss logic
* rename handleSnapPress -> openSheet
* ts fixes and split render into two branches
* fix integration test so we check for BottomSheet behavior rather than child absence
* snapshot updates + comments
* prevent hidden-state BottomSheet dismiss from triggering onPressClose
* port changes from BottomSheet to BottomSheetV2
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