fix partial update in non-keyed classic

Author: birkskyum

frameworks/non-keyed/svelte-classic/src/Main.svelte

@@ -57,7 +57,8 @@
     },
     partialUpdate = () => {
       for (let i = 0; i < data.length; i += 10) {
-        data[i].label += ' !!!';
+        // data[i].label += " !!!"; (see https://github.com/sveltejs/svelte/issues/9521)
+				data[i] = {...data[i], label: data[i].label + ` !!!`}
       }
     },
     remove = (num) => {