[connectedk8s] fix connect cmd issue of namespace delete

[bavneetsingh16]

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[azure-client-tools-bot-prd]

️✔️Azure CLI Extensions Breaking Change Test

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[yonzhan]

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[azclibot]

[Release] Update index.json for extension [ connectedk8s ] : https://dev.azure.com/azclitools/release/_build/results?buildId=182752&view=results