owlearnerwidget: Fix output initialization

Always output the initial learner, disregarding the `auto_apply`.

Orange/widgets/utils/owlearnerwidget.py

@@ -123,7 +123,7 @@ def __init__(self):
         self.preprocessors = None
         self.outdated_settings = False
         self.setup_layout()
-        QTimer.singleShot(0, self.apply)
+        QTimer.singleShot(0, self.unconditional_apply)
 
     def create_learner(self):
         """Creates a learner with current configuration.