Empty link preview widget #1073
Description
Embedded link previews (e.g. when pasting a whiteboard link into the Text editor, or when selecting "New whiteboard" from the Text attachment actions menu) don't render any content.
The preview container stays empty.
When inspecting the preview container, it contains a .excalidraw-container element that has further child elements, but nothing is visible in the preview container.
Reproducible on Nextcloud 32, 33 and with latest main/master branches.