Merge pull request #4520 from Avid29/Radial-RTL_override

Added FlowDirection override to RadialProgressBar and RadialGauge default style

Author: michael-hawker

Microsoft.Toolkit.Uwp.UI.Controls.Core/RadialProgressBar/RadialProgressBar.xaml

@@ -8,6 +8,7 @@
         <Setter Property="Outline" Value="{ThemeResource SystemControlBackgroundBaseLowBrush}" />
         <Setter Property="Background" Value="Transparent" />
         <Setter Property="Thickness" Value="4"/>
+        <Setter Property="FlowDirection" Value="LeftToRight"/>
         <Setter Property="Template">
             <Setter.Value>
                 <ControlTemplate TargetType="local:RadialProgressBar">

Microsoft.Toolkit.Uwp.UI.Controls.Input/RadialGauge/RadialGauge.xaml

@@ -81,6 +81,7 @@
                 Value="{ThemeResource RadialGaugeForeground}" />
         <Setter Property="UseSystemFocusVisuals"
                 Value="True" />
+        <Setter Property="FlowDirection" Value="LeftToRight"/>
         <Setter Property="Template">
             <Setter.Value>
                 <ControlTemplate TargetType="local:RadialGauge">