Several validation hooks and test utilities currently filter collections using type == "collection", which excludes timeseries collections (whose type is "timeseries"). This means we don't currently have coverage for viewless timeseries collections in these hooks.

Changes needed:

• Replace type == "collection" filters with explicit type != "view" to ensure timeseries collections are included in testing
• Add filter to exclude system.buckets.* namespaces, we should avoid targeting them directly.