Fix recursive static init (#2196)

* Removed default config for abstract logger that sends a system notification, also cleaned up a useless ifdef

* Send notifications from event loop on Win and Mac (#2197)

Signed-off-by: Haris Gušić <harisgusic.dev@gmail.com>

Co-authored-by: Haris Gušić <harisgusic.dev@gmail.com>

src/utils/systemnotification.cpp

@@ -40,7 +40,14 @@ void SystemNotification::sendMessage(const QString& text,
     }
 
 #if defined(Q_OS_MACOS) || defined(Q_OS_WIN)
-    Controller::getInstance()->sendTrayNotification(text, title, timeout);
+    QMetaObject::invokeMethod(
+      this,
+      [&]() {
+          // The call is queued to avoid recursive static initialization of
+          // Controller and ConfigHandler.
+          Controller::getInstance()->sendTrayNotification(text, title, timeout);
+      },
+      Qt::QueuedConnection);
 #else
     QList<QVariant> args;
     QVariantMap hintsMap;