cdc: add warn for event filter

[qiancai]

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What is the related PR or file link(s)?

• This PR is translated from: cdc: add warn for event filter docs-cn#18865
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• Delete files
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[qiancai]

/cc @wk989898

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[qiancai]

/approve

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[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.5: #19268.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.1: #19269.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.5: #19270.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.1: #19271.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.2: #19272.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.3: #19273.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.4: #19274.