Also ignore/allow arc_with_non_send_sync in druid

druid/src/lib.rs

@@ -150,6 +150,7 @@
 )]
 #![warn(missing_docs)]
 #![allow(clippy::new_ret_no_self, clippy::needless_doctest_main)]
+#![allow(clippy::arc_with_non_send_sync)]
 #![allow(clippy::duplicate_mod)] // TODO: Remove this after the text/mod.rs format_priv hack has been removed (0.8.0+)
 #![cfg_attr(docsrs, feature(doc_cfg))]
 #![doc(