Invalid filename ending in .exe when downloading

Search before asking

• I had searched in the issues and found no similar issues.

Operating System

• macOS
• Windows
• Linux

Operating System Version

Windows 10, macOS 13.2.1

It happens on the web browser too?

Yes, it happens on the web browser too

Rocket.Chat Desktop App Version

3.8.17

Rocket.Chat Server Version

6.0.0

Describe the bug

When uploading a file that is ended with .exe to a channel, the extra .dll extension is appended to the file name. This results in incorrect naming while downloading this file: filename.exe.dll

How to Reproduce

1. Upload a file with the .exe extension
2. Download the file (it will be saved with extra .dll; does not matter which type of OS or client is used)

Describe your Expected behavior

There must be no extra .dll extension

Anything else

It works as expected on Linux (both app and web browser)

Are you willing to submit a code contribution?

• Yes, I am willing to submit a Pull Request!

Reproduce the issue by uploading a file ending in .exe and downloading it on Windows or macOS, as described in the issue. Trace the download filename handling from that reproduction; done means the downloaded file keeps its original .exe ending without an added .dll, including when downloaded through the web browser.