Fixed: Remove color scheme query from svgs and always use fill: #fff

[drikusroor]

This PR aims to fix the following things:

• The SVGs still had a fill color based on the preferred color-scheme (system preference based), which caused the SVGs to have the wrong fill when your OS/System preferred light mode (on dark mode it worked fine). This color-scheme based fill has been removed and set to white (#fff) in all cases.
• As the html structure of the list items slightly changed since a recent PR, the colored numbered list items did not have rounded borders on all sides anymore. This has been fixed by updating the selector that applies the border radius in print mode.

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