tests: add test case for loading copied wallet twice
tests: add test case for loading copied wallet twice

Github-Pull: #14320
Rebased-From: 4ea7732

Former-commit-id: 86bbee7f2609035a42c15736486b02e49a133926
syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin