Age restricted YouTube videos are not handled properly

[cablehub]

Version running
v3.2.3

Describe the bug
When trying to download age-restricted YouTube videos, the download either finishes immediately with 0 bytes -or- the web-ui freezes up if format selection is enabled (i.e. web-ui is darkened + endless spinner).

To Reproduce
Steps to reproduce the behavior:

1. Add this video to download queue: https://www.youtube.com/watch?v=ZsUAK9cWIJ8

-or-

1. Enable format selection in settings
2. Add this video to download queue: https://www.youtube.com/watch?v=ZsUAK9cWIJ8

Expected behavior
yt-dlp Web UI should throw an error, informing the user that the video is age-restricted and thus cannot be downloaded.

Additional context
I also tried adding Netscape Cookies for a YT account which has the restriction lifted, but that did not change the behavior.
I'd assume the same applies to country-restricted YouTube videos, couldn't find one to test on short notice, though.

[cablehub]

Might be related to this issue: yt-dlp/yt-dlp#11868 (comment)

The download of the video in question works manually when using this command line:
yt-dlp --cookies-from-browser <BROWSER> --extractor-args "youtube:player-client=tv" <URL>