fix: Correct file upload configuration handling in FileUploadComponent

- Updated the file upload configuration to ensure that the safeComponentConfig is properly merged into fileConfig.
- This change enhances the reliability of file upload settings by ensuring that default values are applied correctly, improving the overall functionality of the file upload feature.

frontend/lib/registry/components/v2-file-upload/FileUploadComponent.tsx

@@ -492,11 +492,11 @@ const FileUploadComponent: React.FC<FileUploadComponentProps> = ({
   // 파일 업로드 설정 - componentConfig가 undefined일 수 있으므로 안전하게 처리
   const safeComponentConfig = componentConfig || {};
   const fileConfig = {
+    ...safeComponentConfig,
     accept: safeComponentConfig.accept || "*/*",
     multiple: safeComponentConfig.multiple || false,
     maxSize: safeComponentConfig.maxSize || 10 * 1024 * 1024, // 10MB
     maxFiles: safeComponentConfig.maxFiles || 5,
-    ...safeComponentConfig,
   } as FileUploadConfig;
 
   // 파일 선택 핸들러
@@ -1117,7 +1117,7 @@ const FileUploadComponent: React.FC<FileUploadComponentProps> = ({
         onFileDelete={handleFileDelete}
         onFileView={handleFileView}
         onSetRepresentative={handleSetRepresentative}
-        config={safeComponentConfig}
+        config={fileConfig}
         isDesignMode={isDesignMode}
       />
     </div>