When a slow query gets logged, the collection type (normal/timeseries/system/etc.) is printed as part of the collectionType field in the log line, e.g.:

{"t":{"$date":"2025-07-15T13:15:21.072+00:00"},"s":"I",  "c":"COMMAND",  "id":51803,   "ctx":"conn3","msg":"Slow query","attr":{"type":"command","isFromUserConnection":true,"ns":"test.ts","collectionType":"timeseries",[...]

This logic does not currently work for viewless timeseries, as it is based on the underlying collection being a timeseries view or buckets namespace.

Find a way to identify that the collection is viewless timeseries and report accordingly.

This will fix the jstests/noPassthrough/logging/log_collectionType.js test.