Fix window sizing

If window is maximized then its size cannot be changed, therefore window state is set to normal before.

See https://discourse.slicer.org/t/module-jupyternotebookslib-has-no-attribute-appwindow/11899/8

Author: lassoan

JupyterNotebooks/JupyterNotebooksLib/widgets.py

@@ -156,6 +156,7 @@ def setWindowSize(width=None, height=None, scale=None):
         if scale is not None:
             width *= scale
             height *= scale
+        slicer.util.mainWindow().showNormal()  # make sure the window is not maximized
         slicer.util.mainWindow().size = qt.QSize(width, height)
 
     @staticmethod