s3: fix encoding of downloaded stream

src/storage/s3.js

@@ -28,13 +28,14 @@ const assert = require('assert'),
     BoxError = require('../boxerror.js'),
     { ConfiguredRetryStrategy } = require('@smithy/util-retry'),
     constants = require('../constants.js'),
+    consumers = require('node:stream/consumers'),
     debug = require('debug')('box:storage/s3'),
     http = require('http'),
     https = require('https'),
     { NodeHttpHandler } = require('@smithy/node-http-handler'),
     { PassThrough } = require('node:stream'),
     path = require('path'),
-    Readable = require('stream').Readable,
+    { Readable } = require('stream'),
     { S3 } = require('@aws-sdk/client-s3'),
     safe = require('safetydance'),
     { Upload } = require('@aws-sdk/lib-storage');
@@ -199,10 +200,10 @@ class S3MultipartDownloadStream extends Readable {
         if (error) return this._handleError(error);
 
         const contentLength = parseInt(data.ContentLength, 10); // should be same as length
-        const body = await data.Body.transformToString();
 
         if (contentLength > 0) {
             this._readSize += contentLength;
+            const body = await consumers.buffer(data.Body); // data.Body.transformToString('binary') also works
             this.push(body);
         } else {
             this._done();