Large file transfer is not reliable.

[helloSpookle]

Describe the bug
Large file transfer is not reliable.
大文件传输不可靠。

To Reproduce
Steps to reproduce the behavior:

1. Start service on a phone and connect from PC Web Browser
   在手机上启动服务，并在PC上通过浏览器连接
2. Click on 'Files' to access files on the phone, and select a folder to store new files, e.g. /path
   选择手机上一个合适的位置存储文件，例如/path
3. Click on Upload -> Upload Folder. "Uploading File" also makes sense, but "Uploading Folder", especially a folder with several multi-media files, is easier to reproduce.
   选择上传文件夹。上传单个文件亦可，但上传包含多个大型媒体文件的文件夹，复现率更高。
4. Select a folder which contains one or more large files, e.g. the opus file in the link below. Don't forget to copy it a few times on PC. https://drive.google.com/file/d/1GkIEO9WpnVvqcl1QEhhIxudl9CCtA3uP/view?usp=sharing
   选择一个文件夹，如果手头没有合适的文件，可以下载链接中的opus文件，并利用复制功能或PC文件系统的链接功能创建多个副本
5. Wait for transfer to be done.
   等待传输结束后
6. Check the new file on the phone. Sometimes its size suggests the problem obviously; calculate its MD5 checksum if not.
   检查手机上收到的文件。有时从文件体积就能看出文件不一致，如果体积与原始文件接近，可以计算MD5校验和。

Expected behavior
Large files are also should be transfered fully and correctly.

Desktop (please complete the following information):

• OS: [Windows 10]
• Browser [Chromium]
• Version [138.0.7204.298]

Smartphone (please complete the following information):

• Device: [Redmi Note12T Pro & Vivo Y200t]
• OS: [Android 13 & 14]
• App Version: [3.0.1 & 2.1.22]

Additional context
The file in the link is much easier to reproduce this problem on my device. I have no idea what makes differences.
GD链接中的文件今天在我的设备上测试的时候反复尝试多次，它和它同目录下的其他5个音频文件问题复现率很高。其他视频和音频过去也有发生过，但当时没有记录，体感上故障文件数的比例会比较低。 暂时没有找到确切的原因。

[helloSpookle]

Due to the out-of-date app version, I have redone the test with PlainApp 3.0.4(F-Droid) + Redmi Note12T Pro + Chromium 138 ESR / Firefox 148. The problem is still there.

[ismartcoding]

Don't worry, working on this.