SERP providers inconsistencies

[AndreyBykov]

X and V providers work perfectly, both mobile and desktop. VA would return desktop organic results while trying to extract mobile (I think related to https://github.com/apify/actor-google-search-scraper/issues/33). D would not accept hl/gl/uule params (request fails). L would not accept hl/gl/uule params (request fails). Would also fail while trying to extract mobile results.

Also noticed while testing that in some rare cases paidProducts were on page (I think), but not in output (if I am not wrong - for 'mobile' layout).