UndoReadFromDisk works on undo files (rev), not on block files.
UndoReadFromDisk works on undo files (rev), not on block files.

Github-Pull: #8737
Rebased-From: b4fb51271905f9ef39e5c2bc7e8c15e7489394a1

experiencecoin/experiencecoin,magacoin/magacoin,HashUnlimited/Einsteinium-Unlimited,zcoinofficial/zcoin,funkshelper/woodcore,magacoin/magacoin,lbrtcoin/albertcoin,bitcoinplusorg/xbcwalletsource,emc2foundation/einsteinium,OmniLayer/omnicore,magacoin/magacoin,OmniLayer/omnicore,experiencecoin/experiencecoin,ShadowMyst/creativechain-core,martindale/elements,itmanagerro/tresting,bdelzell/creditcoin-org-creditcoin,ShadowMyst/creativechain-core,shaolinfry/litecoin,OmniLayer/omnicore,zcoinofficial/zcoin,emc2foundation/einsteinium,HashUnlimited/Einsteinium-Unlimited,OmniLayer/omnicore,okinc/bitcoin,EntropyFactory/creativechain-core,okinc/bitcoin,gjhiggins/vcoincore,cannabiscoindev/cannabiscoin420,reorder/viacoin,martindale/elements,Electronic-Gulden-Foundation/egulden,reorder/viacoin,gravio-net/graviocoin,EntropyFactory/creativechain-core,martindale/elements,EntropyFactory/creativechain-core,nlgcoin/guldencoin-official,zcoinofficial/zcoin,jl2012/litecoin,lbrtcoin/albertcoin,zcoinofficial/zcoin,metacoin/florincoin,funkshelper/woodcore,litecoin-project/litecore-litecoin,nlgcoin/guldencoin-official,gjhiggins/vcoincore,ShadowMyst/creativechain-core,lbrtcoin/albertcoin,funkshelper/woodcore,jl2012/litecoin,nlgcoin/guldencoin-official,EntropyFactory/creativechain-core,zetacoin/zetacoin,metacoin/florincoin,jl2012/litecoin,magacoin/magacoin,ShadowMyst/creativechain-core,gjhiggins/vcoincore,shaolinfry/litecoin,Electronic-Gulden-Foundation/egulden,martindale/elements,shaolinfry/litecoin,martindale/elements,metacoin/florincoin,itmanagerro/tresting,bitcoinplusorg/xbcwalletsource,metacoin/florincoin,reorder/viacoin,gjhiggins/vcoincore,litecoin-project/litecore-litecoin,litecoin-project/litecore-litecoin,experiencecoin/experiencecoin,experiencecoin/experiencecoin,zetacoin/zetacoin,oklink-dev/bitcoin,okinc/bitcoin,nlgcoin/guldencoin-official,lbrtcoin/albertcoin,zcoinofficial/zcoin,emc2foundation/einsteinium,oklink-dev/bitcoin,bitcoinplusorg/xbcwalletsource,jl2012/litecoin,gjhiggins/vcoincore,cannabiscoindev/cannabiscoin420,itmanagerro/tresting,nlgcoin/guldencoin-official,metacoin/florincoin,bdelzell/creditcoin-org-creditcoin,martindale/elements,shaolinfry/litecoin,itmanagerro/tresting,magacoin/magacoin,itmanagerro/tresting,gravio-net/graviocoin,gravio-net/graviocoin,okinc/bitcoin,experiencecoin/experiencecoin,zetacoin/zetacoin,okinc/bitcoin,oklink-dev/bitcoin,gravio-net/graviocoin,metacoin/florincoin,HashUnlimited/Einsteinium-Unlimited,nlgcoin/guldencoin-official,OmniLayer/omnicore,magacoin/magacoin,experiencecoin/experiencecoin,litecoin-project/litecore-litecoin,lbrtcoin/albertcoin,funkshelper/woodcore,Electronic-Gulden-Foundation/egulden,shaolinfry/litecoin,lbrtcoin/albertcoin,lbrtcoin/albertcoin,itmanagerro/tresting,zcoinofficial/zcoin,zcoinofficial/zcoin,emc2foundation/einsteinium,oklink-dev/bitcoin,zetacoin/zetacoin,cannabiscoindev/cannabiscoin420,gravio-net/graviocoin,bitcoinplusorg/xbcwalletsource,ShadowMyst/creativechain-core,bitcoinplusorg/xbcwalletsource,zetacoin/zetacoin,reorder/viacoin,litecoin-project/litecore-litecoin,cannabiscoindev/cannabiscoin420,zcoinofficial/zcoin,litecoin-project/litecore-litecoin,lbrtcoin/albertcoin,cannabiscoindev/cannabiscoin420,bdelzell/creditcoin-org-creditcoin,bdelzell/creditcoin-org-creditcoin,Electronic-Gulden-Foundation/egulden,EntropyFactory/creativechain-core,bdelzell/creditcoin-org-creditcoin,jl2012/litecoin,emc2foundation/einsteinium,HashUnlimited/Einsteinium-Unlimited,Electronic-Gulden-Foundation/egulden,emc2foundation/einsteinium,reorder/viacoin,reorder/viacoin,funkshelper/woodcore,zcoinofficial/zcoin,HashUnlimited/Einsteinium-Unlimited,shaolinfry/litecoin,lbrtcoin/albertcoin,ShadowMyst/creativechain-core,HashUnlimited/Einsteinium-Unlimited,zcoinofficial/zcoin,gjhiggins/vcoincore,cannabiscoindev/cannabiscoin420,okinc/bitcoin,gravio-net/graviocoin,oklink-dev/bitcoin,bdelzell/creditcoin-org-creditcoin,jl2012/litecoin,zetacoin/zetacoin,lbrtcoin/albertcoin,OmniLayer/omnicore,lbrtcoin/albertcoin,EntropyFactory/creativechain-core,oklink-dev/bitcoin,bitcoinplusorg/xbcwalletsource,Electronic-Gulden-Foundation/egulden,lbrtcoin/albertcoin