DataGrid RowDetail Fix
DataGrid RowDetail Fix

Fixed a bug where row details would fail to show if the templated
element had a non-empy margin

jkoritzinsky/Avalonia,grokys/Perspex,SuperJMN/Avalonia,wieslawsoltes/Perspex,AvaloniaUI/Avalonia,AvaloniaUI/Avalonia,SuperJMN/Avalonia,SuperJMN/Avalonia,wieslawsoltes/Perspex,akrisiun/Perspex,jkoritzinsky/Avalonia,AvaloniaUI/Avalonia,SuperJMN/Avalonia,wieslawsoltes/Perspex,AvaloniaUI/Avalonia,SuperJMN/Avalonia,wieslawsoltes/Perspex,SuperJMN/Avalonia,wieslawsoltes/Perspex,AvaloniaUI/Avalonia,jkoritzinsky/Avalonia,SuperJMN/Avalonia,jkoritzinsky/Avalonia,jkoritzinsky/Avalonia,jkoritzinsky/Perspex,wieslawsoltes/Perspex,AvaloniaUI/Avalonia,Perspex/Perspex,jkoritzinsky/Avalonia,AvaloniaUI/Avalonia,Perspex/Perspex,grokys/Perspex,jkoritzinsky/Avalonia,wieslawsoltes/Perspex