If a IsModal property is introduced, it should apply to ALL states, including custom ones the user adds to the States collection. We expect the following properties if IsModal is true:

- The user should not be able to interact with background content (unless dismissed)

- In terms of accessibility, keyboard navigation should only navigate within the RadBottomSheet.BottomSheetContent (so not the background or RadBottomSheet.Content)

- Preferably a visual indicator like a scrim in the background to indicate to the user that the bottom sheet is acting like a modal, that when tapped, dismisses both the scrim and the bottom sheet.
 

When wrapping the page content inside bottom sheet, provide an option for the content to extend under the safe area. (when setting the SafeAreaEdges to none)