common/origin_save: Speedup save requests list loading
When loading save requests list, the web application will try to find a visit date for each submitted origin save request. This process is repeated while a visit date has not been found yet.
To speedup the loading of the requests lst, stop trying to find a visit date one month after a save request submission as those requests to storage are expensive and associated loading task surely ended up with errors.
Migrated from D3354 (view on Phabricator)