mod_cloud_notify: fix bug when multiple resources are used This bug was triggered under the rare circumstances that a message arrived and one resource was smacks hibernated while the other one(s) were offline. Then only the hibernated resource but not the offline one(s) (or the other way round) got notified.

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summary: Allow server administrators to probe any user
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This module lets server administrators send `<presence type="probe"/>`
to any local user and receive their presence in response, bypassing
roster checks.