Don't muck with linestyle default when setting it.

Fixes https://gitlab.com/kicad/code/kicad/issues/11520

eeschema/sch_line.cpp

@@ -272,11 +272,7 @@ void SCH_LINE::SetLineStyle( const int aStyleId )
 
 void SCH_LINE::SetLineStyle( const PLOT_DASH_TYPE aStyle )
 {
-    if( aStyle == GetDefaultStyle() )
-        m_stroke.SetPlotStyle( PLOT_DASH_TYPE::DEFAULT );
-    else
-        m_stroke.SetPlotStyle( aStyle );
-
+    m_stroke.SetPlotStyle( aStyle );
     m_lastResolvedLineStyle = GetLineStyle();
 }