Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

There are currently 5 styles that specify LineHighlight:

• styles/catppuccin-frappe.xml
• styles/catppuccin-latte.xml
• styles/catppuccin-macchiato.xml
• styles/catppuccin-mocha.xml
• styles/github-dark.xml

In each case, the resulting style is #HEXCODE instead of bg: #HEXCODE.

cc: @icy-comet

To Reproduce

Not applicable because the playground does not allow you to specify which lines to highlight.