consumer(ticdc): do not ignore event if event commit-ts greater than the high watermark

[3AceShowHand]

What problem does this PR solve?

Issue Number: close #xxx

What is changed and how it works?

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

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[ti-chi-bot]

@3AceShowHand: 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	5bedd08	link	true	/test verify
pull-cdc-integration-mysql-test	5bedd08	link	true	/test cdc-integration-mysql-test

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