refactor: Default options in walletcreatefundedpsbt to VOBJ instead of VNULL
refactor: Default options in walletcreatefundedpsbt to VOBJ instead of VNULL

This should not change behavior and makes the code consistent with other
places.

AkioNak/bitcoin,mruddy/bitcoin,kallewoof/bitcoin,fanquake/bitcoin,kallewoof/bitcoin,sipsorcery/bitcoin,namecoin/namecore,jambolo/bitcoin,ajtowns/bitcoin,particl/particl-core,Xekyo/bitcoin,tecnovert/particl-core,namecoin/namecoin-core,kallewoof/bitcoin,mruddy/bitcoin,namecoin/namecoin-core,lateminer/bitcoin,sipsorcery/bitcoin,namecoin/namecoin-core,ajtowns/bitcoin,particl/particl-core,bitcoinsSG/bitcoin,fujicoin/fujicoin,bitcoinsSG/bitcoin,ajtowns/bitcoin,namecoin/namecoin-core,jamesob/bitcoin,namecoin/namecore,AkioNak/bitcoin,fanquake/bitcoin,bitcoin/bitcoin,sipsorcery/bitcoin,namecoin/namecore,sipsorcery/bitcoin,namecoin/namecore,fujicoin/fujicoin,Xekyo/bitcoin,namecoin/namecoin-core,sipsorcery/bitcoin,bitcoin/bitcoin,jamesob/bitcoin,sstone/bitcoin,fujicoin/fujicoin,tecnovert/particl-core,bitcoin/bitcoin,jambolo/bitcoin,sstone/bitcoin,kallewoof/bitcoin,particl/particl-core,AkioNak/bitcoin,jambolo/bitcoin,fanquake/bitcoin,namecoin/namecore,jambolo/bitcoin,lateminer/bitcoin,bitcoin/bitcoin,kallewoof/bitcoin,particl/particl-core,sstone/bitcoin,fujicoin/fujicoin,AkioNak/bitcoin,Xekyo/bitcoin,Xekyo/bitcoin,jambolo/bitcoin,fanquake/bitcoin,Xekyo/bitcoin,bitcoinsSG/bitcoin,sstone/bitcoin,mruddy/bitcoin,fanquake/bitcoin,fanquake/bitcoin,lateminer/bitcoin,ajtowns/bitcoin,jamesob/bitcoin,bitcoinsSG/bitcoin,ajtowns/bitcoin,sstone/bitcoin,lateminer/bitcoin,fujicoin/fujicoin,jamesob/bitcoin,mruddy/bitcoin,AkioNak/bitcoin,Xekyo/bitcoin,kallewoof/bitcoin,jamesob/bitcoin,bitcoin/bitcoin,lateminer/bitcoin,tecnovert/particl-core,mruddy/bitcoin,bitcoinsSG/bitcoin,sipsorcery/bitcoin,namecoin/namecore,jambolo/bitcoin,particl/particl-core,fujicoin/fujicoin,lateminer/bitcoin,bitcoinsSG/bitcoin,namecoin/namecoin-core,tecnovert/particl-core,AkioNak/bitcoin,tecnovert/particl-core,tecnovert/particl-core,mruddy/bitcoin,sstone/bitcoin,bitcoin/bitcoin,particl/particl-core,ajtowns/bitcoin,jamesob/bitcoin