feat(customNextPage.js): update proof state after calling zkProgram.update to reflect changes on the UI

Author: ymekuria

src/lib/ui/next/customNextPage.js

@@ -96,6 +96,7 @@ export default function Home() {
   const updateZKprogram = async () => {
     if (contractState && proof) {
       const update = await zkProgram.update(contractState, proof);
+      setProof(update.proof);
     }
   };