(1) If a condition in a policy of insurance issued for the purposes of section 23C(1) provides that¡X
(a) no liability shall arise under the policy; or
(b) any liability so arising shall cease,
in the event of some specified thing being done or omitted to be done after the happening of the event giving rise to a claim under the policy, the condition shall be of no effect in connection with the liability mentioned in section 23D(1)(c).
(2) Nothing in this section shall be taken to render void any provisions in a policy of insurance requiring the person insured to repay to the authorized insurer any sums which¡X
(a) the authorized insurer may have become liable to pay under the policy; and
(b) have been applied to the satisfaction of the claims of third parties.