captured the correct value for next instead of using key

packages/svelte/src/internal/client/dom/elements/attributes.js

@@ -192,7 +192,9 @@ export function set_attributes(element, prev, next, lowercase_attributes, css_ha
 						events.push([
 							key,
 							value,
-							() => (next[key] = create_event(event_name, element, value, opts))
+							// since key is a var, when calling this in a later point, it will point the last value it had
+							// hence we can't do that and we have to do this instead
+							() => (next[`on${event_name}`] = create_event(event_name, element, value, opts))
 						]);
 					} else {
 						next[key] = create_event(event_name, element, value, opts);