Feature Request/Idea: Review UI/UX for attempting to download inaccessible files

Overview of the Feature Request
Once upon a time the only thing that would keep a user from downloading a file were file restrictions. Since then we have limited access via embargoes, file retention periods and storage limitations. In the UI a user may select several files for download and some of the files may be inaccessible for any of these reasons. Kind of an edge case, but it's possible that the user could attempt to download a group of files and have one or more files be inaccessible for any any or all of these reasons.

We should take a look at improving the user experience when they attempt to download an inaccessible file(s), giving them useful information on why and if possible what they need to do to gain access.

What kind of user is the feature intended for?
File Downloader

What inspired the request?
QA on the file retention feature

What existing behavior do you want changed?
Here's an example of what we show the user now

Any brand new behavior do you want to add to Dataverse?

Any open or closed issues related to this feature request?

Start by reviewing the current multi-file download flow and the behavior shown in the linked screenshot, then compare it with the stated causes of inaccessibility: restrictions, embargoes, retention periods, and storage limits. Done should provide users with useful information about inaccessible files and, where possible, explain how access can be gained.