test: add an assertion for SF_MDAPI_TEMP_DIR fix @W-19870602@#1460

WillieRuemmele wants to merge 1 commit intomainsalesforcecli/plugin-deploy-retrieve:mainfrom

wr/fixTempDirDateInPathsalesforcecli/plugin-deploy-retrieve:wr/fixTempDirDateInPathCopy head branch name to clipboard