Subject to subdivision (b) of Section 8481, the court shall direct that no bond be given in either of the following cases:
(a) The will waives the requirement of a bond and the person named as executor in the will is appointed special administrator.
(b) All beneficiaries waive in writing the requirement of a bond and the written waivers are attached to the petition for appointment of the special administrator. This paragraph does not apply if the will requires a bond.