Update Cookie Sync Chooser Debug Message to match Java
This PR updates a debug message that can be returned during the cookie sync choose process, where we determine which bidders will be synced, and if any bidder is rejected, we log a debug message in debug mode.
We're updating the debug message "Type Not Supported", to be "Rejected by Filter", to match the naming convention in java
This message is trigged by syncTypeFilter which is on the request, and it specifies which sync types a bidder is allowed to use.
If the syncer doesn't support the sync type for that bidder, we then return this debug message.
Overall, this message is being updated to match Java.
I consider this a breaking change due to the change in metrics and response string. Let's wait on merging this until PBS 3.0.