feat(virtual-scroll): optimation changes

[necoxrr]

PR

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• [ ] The commit message follows our Commit Message Guidelines
• [ ] Tests for the changes have been added (for bug fixes / features)
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PR Type

What kind of change does this PR introduce?

• [ ] Bugfix
• [ ] Feature
• [ ] Code style update (formatting, local variables)
• [ ] Refactoring (no functional changes, no api changes)
• [ ] Build related changes
• [ ] CI related changes
• [ ] Documentation content changes
• [ ] Other... Please describe:

What is the current behavior?

Issue Number: N/A

What is the new behavior?

Does this PR introduce a breaking change?

• [ ] Yes
• [ ] No

Other information

[github-actions[bot]]

[e2e-test-warn] The component to be tested is missing.

The title of the Pull request should look like "fix(vue-renderless): [action-menu, alert] fix xxx bug".

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[Issues-translate-bot]

Bot detected the issue body's language is not English, translate it automatically.

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This branch is used for optimization and will not be merged yet.