Added fix for whitespaces not displaying in filename

[Mil4n0r]

Checklist
(Check off all the items before submitting)

• Build process is done without errors. All tests pass in the /lib directory.
• Self-reviewed the code before submitting.
• Meets accessibility standards.
• Added/updated documentation to /website as needed.
• Added/updated tests as needed.

Description
FileItems inside FileInput were not displaying their fileName in a correct way, as the no-wrap option for white-space does indeed collapse consecutive spaces into one.

Closes #2106

[GomezIvann]

I think we should add a new story to test the edge case of the user who wrote the issue (or similar).