A pre-fix bug in the cookie-banner SDK walked its own bundle frame
when computing a tracker's initiator, so cookies and storage written
by third parties, malware, or browser extensions were attributed to
cookie-banner.iife.js. The report upsert keeps the existing value on
re-detection (initiator_url = COALESCE(new, old)), so rows whose
corrected initiator is NULL would keep the stale bundle URL forever.
Null initiator_url and initiator_domain on detected_trackers rows that
point at the @probo/cookie-banner bundle. Genuine third-party rows
repopulate the correct initiator on the next detection.
Signed-off-by: Émile Ré <emile@probo.com>