[Bug] Users should not be able to upload files or directories when viewing a single file object

Description of Bug:

Uploading a file while viewing an object changes the object into a directory. At least that is what seems to happen... prefixes are weird.

Steps to Reproduce:

1. Create a product
2. Upload a text file (README.md or similar)
3. View the file contents (e.g. https://source.coop/tyler/test-files/README.md)
4. Enter "Edit Mode" -> "Upload files"
5. Note that nothing changes on the screen
6. Navigate up one level. Note that the file now appears as a directory (i.e. there is a caret ">" beside the file)

Expected Behavior:

The interface should switch to "Read Only" mode when viewing the object's page. The "Upload file" or "Upload directory" options should not appear.

Actual Behavior:

The files appear to upload successfully (i.e. no error) but I don't see how to navigate to the file (or delete them).

Screenshots:

Additional Context:

Start at the object page's Edit Mode and inspect how the Upload files and Upload directory options are shown when viewing a single file. Verify the page switches to Read Only for file objects, hides both upload options, and prevents uploads from changing the file into a directory.