fix createCluster - copy options.defaults.socket before modifying it

[soccermax]

Description

Describe your pull request here

#2373 introduced a bug into the creation of cluster clients. The issue is that provided options for creating a socket are changed. The function clientOptionsDefaults in cluster-slots.ts is called twice once with disableReconnect false and the second call is the real call for creating clients but the function clientOptionsDefaults is overriding this.#options.defaults.socket at line 289 because result.socket is the same reference as this.#options.defaults.socket

fix #2721

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Checklist

• Does npm test pass with this change (including linting)?
• Is the new or changed code fully tested?
• Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?

[leibale]

Good catch! I'm working on releasing it right now.. :)

[soccermax]

Good catch! I'm working on releasing it right now.. :)

nice, thanks for the fast reaction