Set timer initial values as float to satisfy mypy

aesara/graph/fg.py

@@ -508,7 +508,7 @@ class FunctionGraph(MetaObject):
                 attach(self)
             except AlreadyThere:
                 return
-        self.execute_callbacks_times.setdefault(feature, 0)
+        self.execute_callbacks_times.setdefault(feature, 0.0)
         # It would be nice if we could require a specific class instead of
         # a "workalike" so we could do actual error checking
         # if not isinstance(feature, Feature):

aesara/graph/opt.py

@@ -1232,7 +1232,7 @@ class LocalOptGroup(LocalOptimizer):
             self.tracker.add_tracker(o)
 
             if self.profile:
-                self.time_opts.setdefault(o, 0)
+                self.time_opts.setdefault(o, 0.0)
                 self.process_count.setdefault(o, 0)
                 self.applied_true.setdefault(o, 0)
                 self.node_created.setdefault(o, 0)