Update SystemBarProtectionSnippets.kt

Call lambda in the draw phase to reduce recompositions.

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

Author: ashnohe

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

@@ -80,9 +80,8 @@ private fun StatusBarProtection(
     heightProvider: () -> Float = calculateGradientHeight(),
 ) {
 
-    val calculatedHeight = heightProvider()
-
     Canvas(Modifier.fillMaxSize()) {
+        val calculatedHeight = heightProvider()
         val gradient = Brush.verticalGradient(
             colors = listOf(
                 color.copy(alpha = 1f),