v8.5.4: cdc: update description about new architecture (#22031)

[ti-chi-bot]

This is an automated cherry-pick of #22031

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• This PR is translated from: cdc: update description about new architecture docs-cn#21055
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[gemini-code-assist]

Summary of Changes

Hello @ti-chi-bot, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request enhances the documentation for TiCDC's new architecture, providing clearer guidance on its deployment and monitoring. It distinguishes between automatic and manual steps for integrating the new architecture's monitoring dashboard based on TiDB cluster versions and offers detailed instructions for deploying TiCDC nodes using both TiUP and TiDB Operator. The updates aim to improve user experience by providing precise, version-aware information.

Highlights

• Monitoring Dashboard Integration: Clarified that the 'TiCDC-New-Arch' monitoring dashboard is automatically integrated for TiDB clusters v8.5.4 and later, removing the need for manual import in these cases.
• Deployment Instructions: Added comprehensive deployment guides for the new TiCDC architecture, covering both new TiDB cluster deployments and adding TiCDC nodes to existing clusters, with specific instructions for TiUP and TiDB Operator.
• Architecture Compatibility: Emphasized that the new TiCDC architecture maintains compatibility with the configuration, usage, and APIs of the classic TiCDC architecture.

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[gemini-code-assist]

Code Review

This pull request updates the documentation for TiCDC's new architecture, clarifying version-specific behaviors for monitoring dashboards and deployment procedures. The changes improve the structure and clarity of the documents. I've suggested a minor grammatical correction to improve readability.

[qiancai]

/approve

[qiancai]

/approve

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: qiancai

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