Check region availability beyond the US for theme videos

[bientavu]

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ThemerrDB

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Jellyfin

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Feature Request

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Today some youtube videos in the DB are region restricted, so the theme fails to play for users outside the allowed countries. The issue workflow already validates submissions to see if it's available in the US.

It would be nice if it reject videos whose contentDetails.regionRestriction has an allowed list. Or better: expand the allowed list to allow more countries because we might have countries that are regurlarly blocked (Russia for example).