*: Improve cdc server exit logic

[asddongmen]

Signed-off-by: dongmen 414110582@qq.com

What problem does this PR solve?

Issue Number: ref #442

What is changed and how it works?

1. This pull request makes the server exit directly when it encounters the CDC:ErrCaptureSuicide error, which indicates a fatal error has occurred. We believe that rather than resetting all components internally and restarting the server in a loop (which involves resetting some states and is quite complex), it is more appropriate to simply exit and let external operational tools like the operator or TiUP restart the CDC process.

2. It also improves the server closing process by ensuring all components are closed before the server exits. To achieve this, it copies some packages from the tiflow repository into this repository and makes some modifications.

3. Fix the integration test case capture_session_done_during_task, which is a byproduct of the improvements in step 1.

Check List

Tests

• Integration test
• Manual test (add detailed scripts or steps below)

Questions

Will it cause performance regression or break compatibility?

Do you need to update user documentation, design documentation or monitoring documentation?

Release note

None

[ti-chi-bot]

Skipping CI for Draft Pull Request.
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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hongyunyan

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-01-21 02:45:52.861904814 +0000 UTC m=+148880.192824218: ☑️ agreed by hongyunyan.