In embedded chat, the 'dark mode' option does nothing and therefore should be hidden

[CoolCmd]

my player embeds twitch chat (twitch.tv/embed/channel/chat). also my player have the option 'dark theme' (darkpopout), but users are habitually trying betterttv's 'dark mode' option and complain that dark mode do not work at all.

please hide this option in embedded chat. or better remove this option completely from extension, because it just duplicates twitch option and therefore confuses users (btw, ffz extension removed such option).

[github-actions]

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