Make close button on reply preview non-draggable

[luixxiul]

Steps to reproduce

1. Send something to a room
2. Click reply button
3. Drag the close button on the reply preview

Outcome

What did you expect?

The close button should be non-draggable.

What happened instead?

It can be dragged with a ghost image.

Peek.2022-05-06.18-39.mp4

Operating system

Debian

Browser information

Firefox

URL for webapp

localhost

Application version

develop branch

Homeserver

No response

Will you send logs?

No