refactor(pigx-upms-biz): 简化文件上传逻辑,简化文件名编码转换处理逻辑

- 移除 WebUtils 和 StandardCharsets 相关导入
- 删除微服务环境判断逻辑，直接使用 file.getOriginalFilename()
-

pigx-upms/pigx-upms-biz/src/main/java/com/pig4cloud/pigx/admin/service/impl/SysFileServiceImpl.java

@@ -39,7 +39,6 @@ import com.pig4cloud.pigx.admin.mapper.SysFileMapper;
 import com.pig4cloud.pigx.admin.service.SysFileService;
 import com.pig4cloud.pigx.common.core.constant.CommonConstants;
 import com.pig4cloud.pigx.common.core.util.R;
-import com.pig4cloud.pigx.common.core.util.WebUtils;
 import com.pig4cloud.pigx.common.data.tenant.TenantContextHolder;
 import com.pig4cloud.pigx.common.file.core.FileProperties;
 import com.pig4cloud.pigx.common.file.core.FileTemplate;
@@ -54,7 +53,6 @@ import org.springframework.web.multipart.MultipartFile;
 
 import java.io.InputStream;
 import java.nio.charset.Charset;
-import java.nio.charset.StandardCharsets;
 import java.util.*;
 
 /**
@@ -248,18 +246,8 @@ public class SysFileServiceImpl extends ServiceImpl<SysFileMapper, SysFile> impl
         // 创建SysFile对象并设置相关属性
         SysFile sysFile = new SysFile();
         sysFile.setFileName(fileName);
-
-        String originalFilename;
-        if (WebUtils.isMicro()) {
-            originalFilename = file.getOriginalFilename();
-        } else {
-            // 对原始文件名进行编码转换
-            originalFilename = new String(
-                    Objects.requireNonNull(file.getOriginalFilename()).getBytes(StandardCharsets.ISO_8859_1),
-                    StandardCharsets.UTF_8);
-        }
         sysFile.setDir(dir);
-        sysFile.setOriginal(originalFilename);
+        sysFile.setOriginal(file.getOriginalFilename());
         sysFile.setFileSize(file.getSize());
         sysFile.setBucketName(properties.getBucketName());
 		sysFile.setType(type);