Arc - File Manager - support for sorting and icon issue in dark mode

Describe the solution you'd like

Hello! In Arc Desktop v4.5.1, there were two things I noticed in the Files tab (Administration -> Files) that I thought could be improved.

1. When in "User Preferences -> Interface -> Appearance", if you have "Theme = Dark", "Code Editor Theme = Arc Dark", then in the Files tab, the file preview icon is a little bit difficult to see (see Screenshot)
2. More important request: it would be really nice if you could sort the files by "Last Updated Time" or "Size" or "Name", Ascending or Descending, similar to the File Manager in PAW or Windows File Explorer.

Additional context