Build an adaptive app with dynamic navigation: Android Basics with Compose

[tmacdona]

The language for step 3 under "Implement a navigation rail" makes it sound like the AnimatedVisibility composable should be inside the ReplyNavigationRail composable.
"In the ReplyAppContent composable body first line, wrap the ReplyNavigationRail composable around the AnimatedVisibility composable and set the visible parameter to be true if the ReplyNavigationType value is NAVIGATION_RAIL."