Try training short test

Author: C-Achard

napari_cellseg3d/_tests/test_training.py

@@ -30,8 +30,8 @@ def test_training(make_napari_viewer, qtbot):
     # Training is too long to test properly this way. Do not use on Github
     #################
 
-    # widget.start()
-    # assert widget.worker is not None
+    widget.start()
+    assert widget.worker is not None
 
     # with qtbot.waitSignal(signal=widget.worker.finished, timeout=60000, raising=False) as blocker:  # wait only for 60 seconds.
     #     blocker.connect(widget.worker.errored)