api: add ChatListChanged and ChatListItemChanged events (#4476)

src/test_utils.rs

@@ -1022,6 +1022,11 @@ impl EventTracker {
         self.get_matching(|evt| matches!(evt, EventType::IncomingMsg { .. }))
             .await;
     }
+
+    /// Clears event queue
+    pub fn clear_events(&self) {
+        while self.try_recv().is_ok() {}
+    }
 }
 
 /// Gets a specific message from a chat and asserts that the chat has a specific length.