Remove the Send requirement on a local Action's future (fixes #3309) (#…

…3310)

Co-authored-by: Robert Macomber <robertm@mox>

reactive_graph/src/actions/action.rs

@@ -715,7 +715,7 @@ where
     pub fn new_local<F, Fu>(action_fn: F) -> Self
     where
         F: Fn(&I) -> Fu + 'static,
-        Fu: Future<Output = O> + Send + 'static,
+        Fu: Future<Output = O> + 'static,
     {
         Self {
             inner: ArenaItem::new_local(ArcAction::new_unsync(action_fn)),