Select first indes in the wizard app.

Author: yakutovicha

aiidalab_widgets_base/wizard.py

@@ -148,6 +148,7 @@ def __init__(self, steps, show_header=True, **kwargs):
 
         super().__init__(children=[self.header, self.accordion], **kwargs)
         ipw.link((self.accordion, "selected_index"), (self, "selected_index"))
+        self.selected_index = 0
 
     @property
     def show_header(self):