[FIX] calendar: recurrent event after first occurences

The current code to show reccurent event would mingle on a searched
domain and add recurrency test leaves as alternative next to a leaf:

  ('start{,_date,_datetime}', '>=', '{date value}')

But in 43a12e9 the domain generated by the client was simplified, but
the had not yet been updated to reflect this change.

fixes #9165
closes #10084
opw-658241

addons/calendar/calendar.py

@@ -1499,7 +1499,7 @@ class calendar_event(osv.Model):
         for arg in args:
             new_arg = arg
 
-            if arg[0] in ('start_date', 'start_datetime', 'start',) and arg[1] == ">=":
+            if arg[0] in ('stop_date', 'stop_datetime', 'stop',) and arg[1] == ">=":
                 if context.get('virtual_id', True):
                     new_args += ['|', '&', ('recurrency', '=', 1), ('final_date', arg[1], arg[2])]
             elif arg[0] == "id":