fix:修复checkLeader任务卡住 & 修复nacos2.x逻辑兼容问题

[chuntaojun]

Please provide issue(s) of this PR: Fixes #

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• [ ] ApiServer
• [ ] Auth
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• [ ] Performance and Scalability
• [ ] Test and Release

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• [ ] Does not have any user-facing changes. This may include API changes, behavior changes, performance improvements, etc.

[polaris-test-bot]

2023-11-07 10:06:20: =========TEST START========== 2023-11-07 10:53:22: [STANDALONE VERSION]PR autotest FAILED! We executed 40 test cases and 34 were passed. You can see test report in https://polaris-opentest-1306863770.cos.ap-guangzhou.myqcloud.com/prmain/sta/qta-report.html and https://polaris-opentest-1306863770.cos.ap-guangzhou.myqcloud.com/prmain/sta/ratelimit/qta-report.html 2023-11-07 10:53:26: [CLUSTER VERSION] PR autotest FAILED! We executed 39 test cases and 36 were passed. You can see test report in https://polaris-opentest-1306863770.cos.ap-guangzhou.myqcloud.com/prmain/clu/qta-report.html 2023-11-07 10:53:29: [KUBENETES VERSION]PR autotest FAILED! We executed 39 test cases and 37 were passed. You can see test report in https://polaris-opentest-1306863770.cos.ap-guangzhou.myqcloud.com/prmain/k8s/qta-report.html