Avoid selecting all traces on selector=0

Author: wf-r

packages/python/plotly/plotly/basedatatypes.py

@@ -1139,7 +1139,7 @@ def select_traces(self, selector=None, row=None, col=None, secondary_y=None):
             Generator that iterates through all of the traces that satisfy
             all of the specified selection criteria
         """
-        if not selector:
+        if not selector and not isinstance(selector, int):
             selector = {}
 
         if row is not None or col is not None or secondary_y is not None: