add test

test/runtime/samples/deconflict-contextual-bind/Widget.svelte

@@ -0,0 +1,3 @@
+<script>
+	export let prop;
+</script>

test/runtime/samples/deconflict-contextual-bind/_config.js

@@ -0,0 +1,3 @@
+export default {
+	preserveIdentifiers: true
+};

test/runtime/samples/deconflict-contextual-bind/main.svelte

@@ -0,0 +1,8 @@
+<script>
+	import Widget from './Widget.svelte';
+	const values = ['foo', 'bar'];
+</script>
+
+{#each values as value}
+	<Widget bind:value/>
+{/each}