TreeViewItem Chevron show wrong angel direction on FlowDirection="RightToLeft"

[alraseensaad]

Description

The Chevron icon of the TreeViewItem is displayed on wrong angle direction when the FlowDirection is set to RightToLeft or when running in Arabic cultures.

Reproduction Steps

create a TreeView with children and sub children and sent the FlowDirection to RightToLeft

 <TreeView Grid.Column="1"
           FlowDirection="RightToLeft">
     <TreeViewItem Header="Root">
         <TreeViewItem Header="Child 1">
             <TreeViewItem Header="Grandchild 1" />
             <TreeViewItem Header="Grandchild 2" />
         </TreeViewItem>
         <TreeViewItem Header="Child 2">
             <TreeViewItem Header="Grandchild 3" />
             <TreeViewItem Header="Grandchild 4" />
         </TreeViewItem>
     </TreeViewItem>
 </TreeView>

Expected behavior

The chevron icon points to the left (<) when the TreeViewItem is closed and changes to point downward (v) when the TreeViewItem is open.

Actual behavior

The chevron icon points to the right (>) when the TreeViewItem is closed and changes to point upward (^) when the TreeViewItem is open.

Regression?

it just appears on flaunt theme

Known Workarounds

No response

Impact

No response

Configuration

windows 11
dotnet 9

Other information

TreeViewChevron.zip