添加无需转换的属性

Author: lindexi

src/MediaConverters/SkiaWmfRenderer/src/SkiaWmfRenderer/Optimizations/EnhancedGraphicsMetafileOptimization.cs

@@ -49,9 +49,15 @@ public static bool TryOptimizeSvgOrWmf(EnhancedGraphicsMetafileOptimizationConte
 
             return true;
         }
-
-        result = default;
-        return false;
+        else
+        {
+            result = new EnhancedGraphicsMetafileOptimizationResult()
+            {
+                // 无需转换
+                NotNeedOptimize = true,
+            };
+            return false;
+        }
 
         bool IsExtension(string extension)
         {

src/MediaConverters/SkiaWmfRenderer/src/SkiaWmfRenderer/Optimizations/EnhancedGraphicsMetafileOptimizationResult.cs

@@ -23,6 +23,11 @@ public readonly record struct EnhancedGraphicsMetafileOptimizationResult()
     /// </summary>
     public bool IsNotSupport { get; init; }
 
+    /// <summary>
+    /// 无需转换优化，原始文件已满足要求
+    /// </summary>
+    public bool NotNeedOptimize { get; init; }
+
     /// <summary>
     /// 如果发生异常则包含异常对象，否则为 null。
     /// </summary>