### Steps to reproduce

1. Login and create a doc of type Experimental on Edge

2. Drag any file from your computer to the editor


### What is the buggy behavior?

* Nothing happens, BlockNote does not handle file uploads/attachments


### What is the expected behavior?

1. The file gets uploaded and linked to the document

2. The file becomes visible as a block in the editor Begin of the insertion

1. If a preview is not available, display a 'preview not available' block linking to the file.


End of the insertion Begin of the deletion


End of the deletion ###

###

### Environment information

**OpenProject version - dev**

**Browser**

* [ ] Chrome
* [x] Firefox
* [ ] Safari
* [ ] Mobile Safari
* [ ] Other (please specify)

**Operating System**

* [ ] Windows
* [ ] Mac OS X
* [ ] Mobile iOS
* [ ] Mobile Android
* [x] Linux (Arch, BTW)
* [ ] Chrome OS
* [ ] Other (please specify)

**Language**

_Please specify the browser language and the language of the OpenProject user for which the bug occurred._