onvifmetadataparse: Reset state in PAUSED->READY after pad deactivation
requested to merge slomo/gst-plugins-rs:onvifmetadataparse-reset-state-after-pad-deactivation into main
Otherwise the clock id will simply be overridden instead of unscheduling it, and if the streaming thread of the source pad currently waits on it then it will wait potentially for a very long time and deactivating the pad would wait for that to happen.