Automatic merge from submit-queue (batch tested with PRs 46979, 47078, 47138, 46916)

DeleteCollection should include uninitialized resources

Users who delete a collection expect all resources to be deleted, and
users can also delete an uninitialized resource. To preserve this
expectation, DeleteCollection selects all resources regardless of
initialization.

The namespace controller should list uninitialized resources in order to
gate cleanup of a namespace.

Fixes #47137