Composable Function
calculateWindowSizeClass
Android
```kotlin
@ExperimentalMaterial3WindowSizeClassApi
@Composable
fun calculateWindowSizeClass(activity: Activity): WindowSizeClass
```
Calculates the window's `WindowSizeClass` for the provided `activity`.
A new `WindowSizeClass` will be returned whenever a configuration change causes the width or
height of the window to cross a breakpoint, such as when the device is rotated or the window is
resized.