Harden LoadByIDs func

Signed-off-by: Bryan Frimin <bryan@probo.com>

pkg/coredata/cookie_banner.go

@@ -314,6 +314,10 @@ WHERE
 
 	*b = banners
 
+	if len(banners) != len(gid.NewSet(bannerIDs...)) {
+		return ErrResourceNotFound
+	}
+
 	return nil
 }