feat: Add handleYoutube function

[Mynacol]

This supersedes #4786.
It unifies the display of youtube videos (where explicitly handled by the bridges).

We might want to leave the YouTubeFeedExpanderBridge alone, as it handles this stuff already...

[github-actions]

Pull request artifacts

Bridge	Context	Status
AssociatedPressNews	1 Standard Topics (current)	❌ Bridge returned error 404! (20394) ❌ Type: HttpException ❌ Message: https://afs-prod.appspot.com/api/v2/feed/tag?tags=apf-topnews resulted in 404 Not Found
AssociatedPressNews	1 Standard Topics (pr)	❌ Bridge returned error 404! (20394) ❌ Type: HttpException ❌ Message: https://afs-prod.appspot.com/api/v2/feed/tag?tags=apf-topnews resulted in 404 Not Found
AssociatedPressNews	2 Custom Topic (current)	❌ Bridge returned error 404! (20394) ❌ Type: HttpException ❌ Message: https://afs-prod.appspot.com/api/v2/feed/tag?tags=europe resulted in 404 Not Found
AssociatedPressNews	2 Custom Topic (pr)	❌ Bridge returned error 404! (20394) ❌ Type: HttpException ❌ Message: https://afs-prod.appspot.com/api/v2/feed/tag?tags=europe resulted in 404 Not Found
Drive2ru	1 Новости и тест-драйвы (current)	✔️
Drive2ru	1 Новости и тест-драйвы (pr)	✔️
Drive2ru	2 Бортжурналы (По модели или марке) (current)	❌ Bridge returned error 0! (20394) ❌ Type: ErrorException ❌ Message: Attempt to read property "plaintext" on null
Drive2ru	2 Бортжурналы (По модели или марке) (pr)	❌ Bridge returned error 0! (20394) ❌ Type: ErrorException ❌ Message: Attempt to read property "plaintext" on null
Drive2ru	3 Личные блоги (current)	⚠️ The feed has no items
Drive2ru	3 Личные блоги (pr)	⚠️ The feed has no items
Drive2ru	4 Публикации по темам (Стоит почитать) (current)	❌ Bridge returned error 0! (20394) ❌ Type: ErrorException ❌ Message: Attempt to read property "plaintext" on null
Drive2ru	4 Публикации по темам (Стоит почитать) (pr)	❌ Bridge returned error 0! (20394) ❌ Type: ErrorException ❌ Message: Attempt to read property "plaintext" on null
Euronews	1 untitled (current)	✔️
Euronews	1 untitled (pr)	✔️
FallGuys	1 untitled (current)	✔️
FallGuys	1 untitled (pr)	✔️
GenshinImpact	1 untitled (current)	✔️
GenshinImpact	1 untitled (pr)	✔️
Golem	1 untitled (current)	✔️
Golem	1 untitled (pr)	✔️
Heise	1 untitled (current)	✔️
Heise	1 untitled (pr)	✔️
Reddit	1 single (current)	❌ HTTP status 429 Too Many Requests ❌ Type: RateLimitException ❌ Message:
Reddit	1 single (pr)	❌ HTTP status 429 Too Many Requests ❌ Type: RateLimitException ❌ Message:
Reddit	2 multi (current)	❌ HTTP status 429 Too Many Requests ❌ Type: RateLimitException ❌ Message:
Reddit	2 multi (pr)	❌ HTTP status 429 Too Many Requests ❌ Type: RateLimitException ❌ Message:
Reddit	3 user (current)	❌ HTTP status 429 Too Many Requests ❌ Type: RateLimitException ❌ Message:
Reddit	3 user (pr)	❌ HTTP status 429 Too Many Requests ❌ Type: RateLimitException ❌ Message:
Reuters	1 untitled (current)	✔️
Reuters	1 untitled (pr)	✔️
SteamCommunity	1 untitled (current)	✔️
SteamCommunity	1 untitled (pr)	✔️
TheDrive	1 untitled (current)	✔️
TheDrive	1 untitled (pr)	✔️
Webfail	1 By content type (current)	✔️
Webfail	1 By content type (pr)	✔️
Yorushika	1 All categories (current)	✔️
Yorushika	1 All categories (pr)	✔️
Yorushika	2 Only selected categories (current)	⚠️ The feed has no items
Yorushika	2 Only selected categories (pr)	⚠️ The feed has no items
YouTubeCommunityTab	1 By channel ID (current)	✔️
YouTubeCommunityTab	1 By channel ID (pr)	✔️
YouTubeCommunityTab	2 By username (current)	✔️
YouTubeCommunityTab	2 By username (pr)	✔️
YouTubeFeedExpander	1 untitled (current)	✔️
YouTubeFeedExpander	1 untitled (pr)	✔️

last change: Sunday 2025-11-02 00:08:43