Rail reflection on water has transparency in /screenshot

[mgabor]

Rail reflection on water has transparency in screenshot generated with the `/screenshot` command.

Example screenshot:

screenshot-tick-888426.png (16.53 MiB) Viewed 92 times

Even here you can see that the rail reflections are lighter than normal, because the forums have a gray background color showing through the image.

Screenshot taken of the example screenshot loaded in gimp shows transparency very clearly:

10-26-2024, 11-27-57.png (323.56 KiB) Viewed 92 times