When downloading a video on YouTube, it shows the warning "WARNING: [youtube] No supported JavaScript runtime could be found. Only deno is enabled by default; to use another runtime add  --js-runtimes RUNTIME[:PATH]  to your command/config. YouTube extraction without a JS runtime has been deprecated, and some formats may be missing. See  https://github.com/yt-dlp/yt-dlp/wiki/EJS  for details on installing one".
Sometimes it will also refuse to download.


Reproducible: Sometimes

Steps to Reproduce:
1. type yt-dlp "https://www.youtube.com/watch?v=dQw4w9WgXcQ"
2. look at the log output.

Actual Results:
Log output contains 
WARNING: [youtube] No supported JavaScript runtime could be found. Only deno is enabled by default; to use another runtime add  --js-runtimes RUNTIME[:PATH]  to your command/config. YouTube extraction without a JS runtime has been deprecated, and some formats may be missing. See  https://github.com/yt-dlp/yt-dlp/wiki/EJS  for details on installing one


Also the video sometimes refuses to download.

Expected Results:
Log output doesn't contain that value. 

Additional Information:
Maybe it's a good idea to add deno as a dependency?