Drag+Dropping an image to upload not implimented and erases your edits without prompt

[skeddles]

Describe the bug
If you try to drag and drop an image to a pages description, it will navigate the page to the local url of the image - as is the default browser behavior, instead of uploading the image.

It happens even if:

• you open the image upload dialog by clicking the image button the editor
• you drag the image directly onto the button (this usually works with default <input type="file" /> elements)

This is problem because:

1. It's an expected feature nowadays
2. there is nothing stopping the page navigating away, and when that happens you instantly lose any edits you made
3. the expected default behavior of file uploading elements has been circumvented

This is not just a feature request, it resulted in me losing a lot of work on my description when the page navigated away without saving my edits.

To Reproduce
Create / edit a games post, drag and drop an image onto the page

Expected behavior
The editor uploads the dragged in image, or at the very least shows a confirmation when navigating away from the edit project page when you have unsaved edits.

Screenshots

Desktop (please complete the following information):

• OS: windows 10
• Browser: firefox
• Version 133