if file name has Non-ASCII Characters, ipfs add would upload the wrong name

[qiwaa]

the wrong result example:
https://ipfs.io/ipfs/QmZCvCp63opNvthopsfHJWPQb3S1JWExL6uD2besbqyE7W
the right result example:
https://ipfs.io/ipfs/QmPc93VJ1EfT6Qjc2P3ACmV8B2QhsFtynboNDP2fmCE48C

[maksimyugai]

Resolved issue in #5686

[kevodwyer]

Keeping open as it is an issue yet to be resolved

[kevodwyer]

resolved in: #207