refactor: remove unused getDecodedFilename method and simplify filename handling in uploadFileToS3

Author: Ho-s

src/upload/upload.service.ts

@@ -40,10 +40,6 @@ export class UploadService {
     )}.s3.amazonaws.com/${key}`;
   }
 
-  private getDecodedFilename(filename: string) {
-    return Buffer.from(filename, 'latin1').toString('utf8');
-  }
-
   async uploadFileToS3({
     folderName,
     file,
@@ -52,7 +48,7 @@ export class UploadService {
     file: FileUpload;
   }) {
     const key = `${folderName}/${new Date().toISOString()}_${path.basename(
-      this.getDecodedFilename(file.filename),
+      file.filename,
     )}`.replace(/ /g, '');
 
     const upload = new Upload({