Shaker/Avalonia/SukiUI/Theme/PathIconStyles.axaml

<Styles xmlns="https://github.com/avaloniaui"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

    <Style Selector="PathIcon:not(.Flippable)">
        <Setter Property="FlowDirection" Value="LeftToRight"/>
    </Style>

</Styles>