Make the state holder stable

app/src/main/java/com/google/samples/apps/nowinandroid/ui/NiaAppState.kt

@@ -20,6 +20,7 @@ import androidx.compose.material3.windowsizeclass.WindowHeightSizeClass
 import androidx.compose.material3.windowsizeclass.WindowSizeClass
 import androidx.compose.material3.windowsizeclass.WindowWidthSizeClass
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.Stable
 import androidx.compose.runtime.remember
 import androidx.navigation.NavController
 import androidx.navigation.NavDestination
@@ -50,6 +51,7 @@ fun rememberNiaAppState(
     }
 }
 
+@Stable
 class NiaAppState(
     val navController: NavHostController,
     val windowSizeClass: WindowSizeClass