VFS Tree Macro cannot be used with attachment containing space in their name

We cannot use the VFS Tree Macro with an attachment containing a space in its name.

Reproduction steps:

• Create a new page and attach a zip containing a space in its name (like the one attached)
• Edit the page to use the VFS Tree Macro like this:

  {{vfsTree root="attach:Test.WebHome@test vfs2.zip/"/}}
  

• View the page

Expected the result:

• the tree with the content of the archive should be displayed

Obtained result:

• the page is remained blank, we see a very quick loop though
• No error on the console or in the JSON resource