A file which has US (0x1f) character is not accepted

[piste-jp]

Describe the bug

Cannot create a file or a symlink that has US (0x1f) character in the name.

To Reproduce

In bash,touch $'[mount_point]/aaa\x1faaa'.

LTFS returns an invalid argument error.

Expected behavior

Accept the filename and write to an index aaa%1faaa with percent encoded flag.