add semicolon-hoisting test against regression (#2292)

test/runtime/samples/semicolon-hoisting/_config.js

@@ -0,0 +1,3 @@
+export default {
+	html: ``
+};

test/runtime/samples/semicolon-hoisting/main.svelte

@@ -0,0 +1,6 @@
+<script>
+    let time = new Date()
+    let timeZone = 'UTC'
+    ;(() => {
+    })()
+</script>