FR: Add multicall3 to monadTestnet object

[meness]

Please update the monadTestnet object with this one

import { monadTestnet } from '@account-kit/infra';

{
    ...monadTestnet,
    contracts: {
      multicall3: {
        address: '0xcA11bde05977b3631167028862bE2a173976CA11',
        blockCreated: 251449
      }
    }
  }