What do you mean by exparte clause in the divorce petition even if it si under mutual consent ?
Dont create any imaginary term and keep worrying about non-existent things.
The mutual consent divorce is a joint decision and if either do not appear before the court on the second motion to confirm the decision, the court will treat that as withdrawal of the consent by the other party and it will dismiss the petition.
It is not a contested divorce that in the absence of the other p[arty the court may decide to pass exparte decree.
There is no provision in law for such an event when the petition is filed for divorce on the grounds of mutual consent.
Eventually, on non-appearance of any party to this mutual consent divorce, the court may calle the the party absent and as per law, it will dismiss the petition.
The aggrieved party may file a contested divorce on the grounds of cruelty and may cite this also as an additional ground for cruelty.