Update SystemBarProtectionSnippets.kt

Retrieve WindowInsets and Density in Composition. Calculate status bar height within lambda. Allows for height to be calculated when lambda is called. As a result, reduces number of recompositions.

Co-authored-by: Alex Vanyo <[email protected]>

Author: ashnohe

compose/snippets/src/main/java/com/example/compose/snippets/layouts/SystemBarProtectionSnippets.kt

@@ -101,8 +101,9 @@ private fun StatusBarProtection(
 
 @Composable
 fun calculateGradientHeight(): () -> Float {
-    val topInsets = WindowInsets.statusBars.getTop(LocalDensity.current).times(1.2F)
-    return { topInsets }
+    val statusBars = WindowInsets.statusBars
+    val density = LocalDensity.current
+    return { statusBars.getTop(density).times(1.2f) }
 }
 // [END android_compose_system_bar_protection]