removeOfflineAddressesIfNecessary method may cause the service list to be empty when switching clusters

[funky-eyes]

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Ⅰ. Issue Description

removeOfflineAddressesIfNecessary method may cause the service list to be empty when switching clusters. 我认为这里应该防推空,如果没有交集就不做任何处理,这样就可以解决问题了 I think it should be anti-empty here. If there is no intersection, we will not do any processing, so that the problem can be solved

Ⅱ. Describe what happened

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Ⅲ. Describe what you expected to happen

Ⅳ. How to reproduce it (as minimally and precisely as possible)

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Ⅴ. Anything else we need to know?

Ⅵ. Environment:

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