Directs the court, in reviewing and approving an agreement under RCW 26.33.295 for the adoption of a child from foster care, to encourage the adoptive parents, birth parents, foster parents, kinship caregivers, and the department of social and health services or other supervising agency to seriously consider the long-term benefits to the child adoptee and siblings of the child adoptee of providing for and facilitating continuing postadoption contact between the siblings.