It is possible to "unselect" transfer file's actions column

Currently, there is an option to "unselect" the table column that contains the actions for each file. It should not be possible to deactivate that column and, even if would like that behavior, the UI is broken (as can be seen on the screenshot).

Reproduction Steps:

1. Create a transfer and upload at least one file in order to have the files table view; (Alternatively an existing transfer with files can be used!)
2. Go to table column settings to open the popup on the screenshot;
3. Observe that the last entry is empty and it is related to the file actions;