copy as image and dark mode produces incorrect results

[lvmm]

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Describe the bug
In dark mode 'Copy as Image' in the right-click menu produces unusable images, and not just the colour - they are way too large too.

To Reproduce
Steps to reproduce the behavior:

1. Enable dark mode
2. Open Entity Relation library and drag Entity to the canvas
3. Right-click on Entity and select 'Copy as Image' in the menu
4. Paste into a graphics editor e.g. mspaint

Expected behavior
See screenshots below

Screenshots
This is the default Entity from Entity Relation library copied to the clipboard as image in dark mode.

And this is how it looks when exported via File-Export as-PNG with 'Selection Only' checked - the desired behaviour.

Popping up a dialogue after 'Copy as Image' similar to the one used in 'Export as' could be a good idea.

draw.io version (In the Help->About menu of the draw.io editor):

• draw.io version 23.1.5

Desktop (please complete the following information):

• OS: Windows

Additional context
Add any other context about the problem here.