Fix missing error handling in file:copy for non-existent destination directory#576

niveathika merged 2 commits intoballerina-platform:masterballerina-platform/module-ballerina-file:masterfrom

DharshiBalasubramaniyam:file-copy-to-non-exist-target-fixDharshiBalasubramaniyam/module-ballerina-file:file-copy-to-non-exist-target-fixCopy head branch name to clipboard