[Error] distrobox-enter fails on filenames with multiple spaces

[vladrich]

Describe the bug

If a command operates on a file with multiple consequent spaces in the name, then it cannot be run with distrobox-enter.

To Reproduce

[~] touch two\ \ spaces.txt
[~] ./distrobox-enter -n <redacted> -- ls two\ \ spaces.txt 
ls: cannot access 'two spaces.txt': No such file or directory
Exit 2

Note that the error message has only one space between two and spaces.