Unhandled drag and drop on cloud tab opens an invalid file URL

[sardination]

Bug Description
If you drag a file over a website that doesn't handle dragged files, the default behavior is to open a new tab with a file URL for that file. On a cloud tab, this behaves the same way, but uses the path that corresponds to the file path on the server. Sometimes it doesn't even behave this way - it just becomes a white screen.

How to Reproduce
Drag a file over a cloud tab that doesn't handle dragged files.

Potential Implementation(s)
Capture if the server web page is not handling the file and trying to open a new tab and force the image to open up as a file URL on the local browser.