update some tests

test/apps/preloading/src/routes/_layout.html

@@ -1,15 +1,19 @@
+<script context="module">
+	export function preload() {
+		return {
+			rootPreloadFunctionRan: true
+		};
+	}
+</script>
+
+<script>
+	export let preloading;
+	export let child;
+	export let rootPreloadFunctionRan;
+</script>
+
 {#if preloading}
 	<progress class='preloading-progress' value=0.5/>
 {/if}
 
-<svelte:component this={child.component} {rootPreloadFunctionRan} {...child.props}/>
-
-<script>
-	export default {
-		preload() {
-			return {
-				rootPreloadFunctionRan: true
-			};
-		}
-	};
-</script>
+<svelte:component this={child.component} {rootPreloadFunctionRan} {...child.props}/>