Inconsistent preference of local directories over package names in auto hints

[kimikage]

PR #3913 introduces inconsistency in automatic hinting under certain conditions.

For example, When there is a directory named "Documents" in the active directory, and I type "Doc", will it not display a hint "Documents/" and then complete it when I press <TAB>?
I.e., "Documenter" or "DocumenterTools", etc. will not be ignored?

Edit: I am a Windows user, but I believe macOS also has multiple directories in the home directory which start with uppercase.

_Originally posted by @kimikage in #3913 (comment)

The above concerns are actually realized in #master.

Personally, I don't think this is a high priority issue. However, I file this as an issue because the conditions for reproducing the problem depend on the specific situation.