fix(events_executor): Register Waitable timers at TimersManager

This should fix a bug, were the internal expire timer of
the action server was not triggered.

Signed-off-by: Janosch Machowinski <J.Machowinski@cellumation.com>

rclcpp/src/rclcpp/experimental/executors/events_executor/events_executor.cpp

@@ -408,8 +408,18 @@ EventsExecutor::refresh_current_collection(
     [this](auto waitable) {
       waitable->set_on_ready_callback(
         this->create_waitable_callback(waitable.get()));
+      for (const auto &t : waitable->get_timers())
+      {
+        timers_manager_->add_timer(t);
+      }
     },
-    [](auto waitable) {waitable->clear_on_ready_callback();});
+    [this](auto waitable) {
+      waitable->clear_on_ready_callback();
+      for (const auto &t : waitable->get_timers())
+      {
+        timers_manager_->remove_timer(t);
+      }
+    });
 }
 
 std::function<void(size_t)>