Toolbar images are broken

[1nf0rmagician]

Describe the bug
The toolbar images for the notifications and workplans module exist, but are broken apparently.

To Reproduce
Steps to reproduce the behavior:

1. If necessary, checkout the moryx-demo and build it once to download the nuget packages
2. Go to '/.nuget/packages/moryx.notifications.web/10.0.0-future.1702/staticwebassets/assets'
3. Open the notifications_toolbar.jpg or moryx_transparent_colored.png, both images are not propperly loaded

Expected behavior
The images can be viewed and are shown in the web modules when running the application

Screenshots

[dbeuchler]

done by lfs fixes.