This PR is part of #2335. It allows the imp validation logic used to both validate an incoming request and revalidate imps after merging FPD to be executed while skipping the expensive bidder params and native string validation.
Note that it does not make sense to defined bidder params as imp first party data since any param that you can define there can and should instead be defined in imp[n].ext.prebid.bidder.BIDDERNAME.
This PR is part of #2335. It allows the imp validation logic used to both validate an incoming request and revalidate imps after merging FPD to be executed while skipping the expensive bidder params and native string validation.
Note that it does not make sense to defined bidder params as imp first party data since any param that you can define there can and should instead be defined in
imp[n].ext.prebid.bidder.BIDDERNAME.