fix(useDocumentTitle): skip asterik for normal messages in archives

[DorraJaouad]

☑️ Resolves

• Archive a conversation and go to a different tab
• Send a normal message in the archived conversation from another user
  -> you see an asterik in the doc title, you come back, you see no change in your main conversations list and no blue bubble in archived conversations button

spreed/src/components/LeftSidebar/LeftSidebar.vue

Lines 543 to 546 in 3a7c64f

	showArchivedConversationsBubble() {
	return this.archivedConversationsList
	.some(conversation => hasUnreadMentions(conversation) || hasCall(conversation))
	},

🏁 Checklist

• 🌏 Tested with different browsers / clients:
  • Chromium (Chrome / Edge / Opera / Brave)
  • Firefox
  • Safari
  • Talk Desktop
  • Not risky to browser differences / client
• 🖌️ Design was reviewed, approved or inspired by the design team
• ⛑️ Tests are included or not possible
• 📗 User documentation in https://github.com/nextcloud/documentation/tree/master/user_manual/talk has been updated or is not required

[Antreesy]

Tested, nice work!

[Antreesy]

/backport to stable30