When it appears in the administration of an estate of a decedent or a conservatee that subjects, citizens or nationals of any foreign country are or may be interested as heirs, devisees, legatees, or otherwise, the court before whom the matter is pending shall give notice by mail to the consular representative of such country for this state of the pendency of such matter and the probable interest of such foreign citizens, subjects, and nationals therein, if such consular representative has filed his or her name and address in such court. The failure to give such notice shall not affect the validity of any proceeding.