fix: only set attribute as property if element has setter (#13341)

.changeset/beige-clocks-notice.md

@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+fix: only set attribute as property if element has setter

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

@@ -113,7 +113,7 @@ export function set_attribute(element, attribute, value, skip_warning) {
 
 	if (value == null) {
 		element.removeAttribute(attribute);
-	} else if (attribute in element && typeof value !== 'string') {
+	} else if (typeof value !== 'string' && get_setters(element).includes(attribute)) {
 		// @ts-ignore
 		element[attribute] = value;
 	} else {