Add ThreadID parameter for Telegram webhooks (#25996) (#26480)

Backport #25996

Telegram has recently implemented threads (channels) for group chats.

Co-authored-by: Earl Warren <109468362+earl-warren@users.noreply.github.com>
Co-authored-by: neveraskedtoexist <matikot415@gmail.com>

services/webhook/telegram.go

@@ -28,6 +28,7 @@ type (
 	TelegramMeta struct {
 		BotToken string `json:"bot_token"`
 		ChatID   string `json:"chat_id"`
+		ThreadID string `json:"thread_id"`
 	}
 )