[compat] Don't create console in `windows_enable_vt_mode`

Closes #1420

yt_dlp/compat.py

@@ -19,6 +19,7 @@ import shlex
 import shutil
 import socket
 import struct
+import subprocess
 import sys
 import tokenize
 import urllib
@@ -162,7 +163,9 @@ except ImportError:
 def windows_enable_vt_mode():  # TODO: Do this the proper way https://bugs.python.org/issue30075
     if compat_os_name != 'nt':
         return
-    os.system('')
+    startupinfo = subprocess.STARTUPINFO()
+    startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
+    subprocess.Popen('', shell=True, startupinfo=startupinfo)
 
 
 #  Deprecated