NamingEvent contains changed instance list

[finefuture]

Is your feature request related to a problem? Please describe.
NamingEvent contains changed instance list, we need to know which instance was changed

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[KomachiSion]

refer to #10374.

Will be consider with #10374 together.

[KomachiSion]

The feature is relative more features like group subcribers and new notify way #10374 .

So community will redesign and consider this feature into #10374.

Sorry for your PR and if you need this feature for now, you can do this login in your Listener.