Wiki: uploading a file before saving content deletes content withouth warning

when working on an article in the wiki, it is possible to upload files "at the same time", as the upload link is positioned directly underneath the action buttons of the editor.

uploading a file now while still in the editor mode, without having previously saved the content, complete deletes all content not saved without the warning prompt about the "unsaved form content".
The author therefore has no chance to reconsider.

Please add the warning prompt.