TimerService: make TimerResponse support redirect()
This allows executing a script doing REQUEST.RESPONSE.redirect() without error.
Before this patch it's an AttributeError similar to:
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2022-04-12 03:52:49,083 WARNING ActivityTool Could not call method ...
Traceback (most recent call last):
...
File "Script (Python)", line 34, in Base_redirect
return request.RESPONSE.redirect(redirect_url, status=status_code)
AttributeError: TimerResponse instance has no attribute 'redirect'