DataGrid Light theme selected and mouse over background have wrong opacity

[WilliamForsdal]

Hey,

When using Light theme, the DataGridRow background when selected or selected+mouse over is not transparent, so if the row background is styled to something other than white it's clear the color is not transparent.
It seems the opacity is missing from the resources in the Light theme, since they are specified in the dark theme.

I tried specifying the opacity in the following resources:

<SolidColorBrush x:Key="DataGridRowSelectedBackground" Color="#EAF5FF" Opacity="0.2" />
<SolidColorBrush x:Key="DataGridRowSelectedPointeroverBackground" Color="#CBE7FE"  Opacity="0.3" />

in the file src/Semi.Avalonia.DataGrid/Light.axaml

That fixed my issue.

Hope that helps!