Made changes in channel-and-group-conversations.md

[v-nikitach]

No description provided.

[Copilot]

Pull request overview

This PR refreshes the "Channel and group chat conversations with a bot" doc to use the new Teams SDK APIs (e.g., app.OnMessage, AddMention, install.add lifecycle route) instead of the older Bot Framework SDK patterns (OnMessageActivityAsync, Mention object, conversationUpdate/teamMemberAdded). It also updates the description, date, and "See also" links, and removes the "Create new conversation threads" subsection in favor of pointing to proactive messaging.

Changes:

• Replace Bot Framework SDK code samples (C#, TypeScript, Python) for retrieving and adding mentions with Teams SDK equivalents, and add JSON tabs where applicable with unique numbered tab IDs.
• Replace the installation/welcome guidance with a Teams SDK install.add example, and update related "See also" links to Teams SDK references.
• Update metadata (description, ms.date) and remove/comment out the v4-to-v3 include and the "Create new conversation threads" section.

[microsoft-production-github-app]

Acrolinx Scorecards

We currently enforce a minimum score of 80.

Click the scorecard links for each article to review the Acrolinx feedback on grammar, spelling, punctuation, writing style, and terminology:

Article	Score	Issues	Scorecard	Processed
msteams-platform/bots/how-to/conversations/channel-and-group-conversations.md	93	9	link	✅

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[learn-build-service-prod]

PoliCheck Scan Report

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[learn-build-service-prod]

Learn Build status updates of commit 2c263cc:

✅ Validation status: passed

File	Status	Preview URL	Details
msteams-platform/bots/how-to/conversations/channel-and-group-conversations.md	✅Succeeded	View

For more details, please refer to the build report.

[Harikrishnan-MSFT]

Approved !!!