Optimize usage of External ID

[ideascf]

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[ti-chi-bot]

Hi @ideascf. Thanks for your PR.

I'm waiting for a pingcap member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[lianan-352889950]

The revised document description is more in line with the product's security status

[qiancai]

Rest LGTM

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-10-08 12:21:40.096276861 +0000 UTC m=+962255.516489873: ☑️ agreed by qiancai.

[ideascf]

/ok-to-test

[ti-chi-bot]

@ideascf: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

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/ok-to-test

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[qiancai]

/approve

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: qiancai

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