Long‐Term Safety and Efficacy of Once‐Daily and Proactive Twice‐Weekly Roflumilast Cream 0.05% for Mild‐to‐Moderate Atopic Dermatitis in Children Aged 2–5 Years From a 52‐Week, Phase 3 Trial ( <scp>INTEGUMENT</scp> ‐ <scp>OLE</scp> )