chore: add expected html

Author: paoloricciuti

packages/svelte/tests/server-side-rendering/samples/each-body-async/_expected.html

@@ -0,0 +1 @@
+<!--[--><!--[--><!--[--><!---->each<!--]--><!--]--> <!--[--><!--[!--><!---->else<!--]--><!--]--><!--]-->

packages/svelte/tests/server-side-rendering/samples/each-body-async/main.svelte

@@ -1,5 +1,11 @@
-{#each { length: 1 } as _}
-  {@const data = await Promise.resolve("data")}
-  {:else}
-  {@const data = await Promise.resolve("data")}
+{#each { length: 1 }}
+	{@const data = await Promise.resolve("each")}
+	{data}
 {/each}
+
+{#each { length: 0 }}
+	should not see this
+{:else}
+	{@const data = await Promise.resolve("else")}
+	{data}
+{/each}