add non behavioral datatype assertion for warning about missing event…

…s.tsv

src/schema/rules/checks/events.yaml

@@ -10,6 +10,7 @@ EventsMissing:
     level: warning # could be an error with the proper selectors, I think
   selectors:
     - dataset.dataset_description.DatasetType == "raw"
+    - datatype != "beh"
     - '"task" in entities'
     - '!match(entities.task, "rest")'
     - suffix != "events"