Fix desktop effect race condition (#2313)

* don't poll desktop before the render has been applied

* fix desktop headless tests

* move edit queued code into the edit channel and add more comments

packages/desktop/headless_tests/events.rs

@@ -20,8 +20,9 @@ fn app() -> Element {
     let received = RECEIVED_EVENTS();
     let expected = utils::EXPECTED_EVENTS();
 
-    use_effect(move || {
+    use_memo(move || {
         println!("expecting {} events", utils::EXPECTED_EVENTS());
+        println!("received {} events", RECEIVED_EVENTS());
     });
 
     if expected != 0 && received == expected {