chore: use file-scoped namespace

src/Shared/HandyControl_Shared/Expression/Media/InvalidateGeometryReasons.cs

@@ -1,14 +1,13 @@
 using System;
 
-namespace HandyControl.Expression.Media
+namespace HandyControl.Expression.Media;
+
+[Flags]
+public enum InvalidateGeometryReasons
 {
-    [Flags]
-    public enum InvalidateGeometryReasons
-    {
-        ChildInvalidated = 4,
-        IsAnimated = 2,
-        ParentInvalidated = 8,
-        PropertyChanged = 1,
-        TemplateChanged = 0x10
-    }
-}
+    ChildInvalidated = 4,
+    IsAnimated = 2,
+    ParentInvalidated = 8,
+    PropertyChanged = 1,
+    TemplateChanged = 0x10
+}