[EXPECT] When you create a subscription, you should check to avoid synchronizing yourself

[Benxiaohai001]

Describe the bug

When you create a subscription, you should check to avoid synchronizing yourself

1. Avoid syncing yourself;
2. Avoid cyclic synchronization. For example, cluster B subscribes to data in cluster A. cluster A subscribes to cluster B's data.

To Reproduce

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Expected behavior

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Additional context

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