When, in any suit involving a decedent’s estate or a trust, the number of parties exceeds 30, and any one of the parties jointly interested with others in any question arising therein, dies, the court may, notwithstanding, if in its opinion all classes of interests are represented and no one will be prejudiced thereby, proceed to render a decree in such suit as if such party were alive; decreeing to the heirs, devisees, legatees, distributees, or personal representatives, as the case may be, such interest as the deceased person, if alive, would be entitled to. The provisions of § 8.01-322 shall apply to decrees entered hereunder.