ux: placement for history's advanced dropdown menu

Signed-off-by: leo <[email protected]>

Author: love-linger

src/Views/Repository.axaml.cs

@@ -525,6 +525,7 @@ private void OnOpenAdvancedHistoriesOption(object sender, RoutedEventArgs e)
                 };
 
                 var menu = new ContextMenu();
+                menu.Placement = PlacementMode.BottomEdgeAlignedLeft;
                 menu.Items.Add(layout);
                 menu.Items.Add(horizontal);
                 menu.Items.Add(vertical);