version(ticdc): skip checking TiFlash version (#7746)

[ti-chi-bot]

This is an automated cherry-pick of #7746

What problem does this PR solve?

Issue Number: close #7744

What is changed and how it works?

Check List

Tests

• Unit test

Questions

Will it cause performance regression or break compatibility?

No.

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

No.

Release note

Fix the issue that TiCDC mistakenly reports error where there is a higher version TiFlash

[ti-chi-bot]

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[ti-chi-bot]

@ti-chi-bot: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-cdc-integration-kafka-test	1da0224	link	true	/test cdc-integration-kafka-test
pull-cdc-integration-mysql-test	1da0224	link	true	/test cdc-integration-mysql-test
pull-dm-compatibility-test	1da0224	link	true	/test dm-compatibility-test
pull-dm-integration-test	1da0224	link	true	/test dm-integration-test
jenkins-ticdc/verify	1da0224	link	true	/test verify

Full PR test history. Your PR dashboard.

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[ti-chi-bot]

@ti-chi-bot: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
jenkins-ticdc/verify	1da0224	link	true	/test verify
pull-dm-integration-test	1da0224	link	true	/test dm-integration-test

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository. I understand the commands that are listed here.