QueuedTracking intercepts bulk JSON requests it cannot process, silently dropping all events

[oajara]

When QueuedTracking and BulkTracking are both active, QueuedTracking hooks Tracker.newHandler first and replaces the handler unconditionally.

Because PHP only populates $_GET/$_POST for form-encoded bodies, a bulk request sent with Content-Type: application/json leaves RequestSet empty by the time the handler runs. Queue::addRequestSet() silently discards it at the !$requests->hasRequests() guard.

Any application using the Bulk Tracking API alongside QueuedTracking loses all tracking data without any error signal.