Adds support for Private Aggregation’s debug mode for the per-buyer extended Private Aggregation reporting to Protected Audience sellers (aka auctionReportBuyers reporting). This is done with a new, optional auctionReportBuyerDebugModeConfig field passed to runAdAuction(). auctionReportBuyers reporting is currently the only use of Private Aggregation reports that does not have a way to enable its debug mode (a temporary mechanism tied to third-party cookie eligibility that relaxes some of the API’s privacy constraints to allow for easier debugging and integration).
To allow for easier debugging and integration with the new API (before third-party cookie deprecation).
Explainers: https://github.com/WICG/turtledove/blob/main/FLEDGE_extended_PA_reporting.md#temporary-debugging-mechanism