fix: 修复静态与成员函数在包含this参数后如果参数完全相同则计算出MethodDefSignature相同导致RenameRecordMap加载symbol-mapping文件时signature冲突的bug

Editor/Utils/TypeSigUtil.cs

@@ -19,6 +19,10 @@ namespace Obfuz.Utils
             result.Append(" ");
             result.Append(method.DeclaringType.FullName);
             result.Append("::");
+            if (method.IsStatic)
+            {
+                result.Append("@");
+            }
             result.Append(method.Name);
             if (method.HasGenericParameters)
             {