Bug(trees): deeply nested single folder paths don't render nicely

Prerequisites

• I have searched for duplicate or closed issues
• I have read the contributing guidelines

Describe the issue

Using flattenEmptyDirectories is a workaround but not a very user friendly one either IMO. vscode concatenates everythig and cuts it at the end. That way you see the beginning of the path. The extreme form of the current implementation is to only see the ellipsis and not a single character of the actual path

Reproduction

use tree with deeply nested path only containing a single directory (java hierarchy for instance)

What browser(s) are you seeing the problem on?

Chrome

What version of @pierre/diffs are you using?

1.0.0-beta.5