fix: fixing the issue of errors caused by multiple values in the role…

…. When multiple values are set in the role, only the first value is returned.

fix withastro#9856

packages/astro/src/runtime/client/dev-toolbar/apps/audit/a11y.ts

@@ -616,7 +616,8 @@ function menuitem_implicit_role(attributes: Record<string, string>) {
 
 function getRole(element: Element): ARIARoleDefinitionKey | undefined {
 	if (element.hasAttribute('role')) {
-		return element.getAttribute('role')! as ARIARoleDefinitionKey;
+		const roleText = element.getAttribute('role')!;
+		return roleText.slice(0, roleText.indexOf(' ')) as ARIARoleDefinitionKey;
 	}
 	return getImplicitRole(element) as ARIARoleDefinitionKey;
 }