cli: ignore the global flag for changefeed update command (#2839)

[ti-chi-bot]

This is an automated cherry-pick of #2839

What problem does this PR solve?

close https://github.com/pingcap/ticdc/issues/2803

What is changed and how it works?

ignore the global flag for changefeed update command

Check List

Tests

Manual testing.

Code changes

None

Side effects

None

Related changes

• Need to cherry-pick to the release branch

Release note

ignore the global flag for changefeed update command.

[ti-chi-bot]

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[amyangfei]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 918dabe

[ti-chi-bot]

@ti-chi-bot: Your PR was out of date, I have automatically updated it for you.

At the same time I will also trigger all tests for you:

/run-all-tests

If the CI test fails, you just re-trigger the test that failed and the bot will merge the PR for you after the CI passes.

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 ti-community-infra/tichi repository.

[Rustin170506]

/run-all-tests