qa: Test concurrent wallet loading
qa: Test concurrent wallet loading

Github-Pull: #19300
Rebased-From: 9b009fae6e2eb0ab2ee7ce7882c3556a9ac363a7

GroestlCoin/GroestlCoin,vertcoin/vertcoin,DigitalPandacoin/pandacoin,monacoinproject/monacoin,GroestlCoin/GroestlCoin,peercoin/peercoin,ahmedbodi/vertcoin,qtumproject/qtum,peercoin/peercoin,monacoinproject/monacoin,qtumproject/qtum,peercoin/peercoin,vertcoin/vertcoin,peercoin/peercoin,ahmedbodi/vertcoin,GroestlCoin/bitcoin,vertcoin/vertcoin,GroestlCoin/bitcoin,GroestlCoin/bitcoin,monacoinproject/monacoin,monacoinproject/monacoin,DigitalPandacoin/pandacoin,qtumproject/qtum,qtumproject/qtum,DigitalPandacoin/pandacoin,GroestlCoin/GroestlCoin,ahmedbodi/vertcoin,vertcoin/vertcoin,GroestlCoin/GroestlCoin,GroestlCoin/bitcoin,ahmedbodi/vertcoin,vertcoin/vertcoin,qtumproject/qtum,DigitalPandacoin/pandacoin,qtumproject/qtum,qtumproject/qtum,GroestlCoin/GroestlCoin,ahmedbodi/vertcoin,DigitalPandacoin/pandacoin,vertcoin/vertcoin,ahmedbodi/vertcoin,peercoin/peercoin,monacoinproject/monacoin,GroestlCoin/bitcoin,DigitalPandacoin/pandacoin,peercoin/peercoin,GroestlCoin/bitcoin,monacoinproject/monacoin,GroestlCoin/GroestlCoin