if we are filtering then clone the items source so we don't mutate the source if filtering performs any projection
if we are filtering then clone the items source so we don't mutate the source if filtering performs any projection

marinels/webrx-react,patsissons/WebRx.React,marinels/webrx-react,marinels/webrx-react,patsissons/WebRx.React,patsissons/WebRx.React