[Tech Request]: handle connection failure for cdc suitably

[daviszhen]

Is there an existing issue for the same tech request?

• I have checked the existing issues.

Does this tech request not affect user experience?

• This tech request doesn't affect user experience.

What would you like to be added ?

合适的处理cdc链接失败时，事务和数据重传。
例如：'invalid connection' or 'bad connectiion'

Why is this needed ?

提升cdc在链接断开时的健壮性。

Additional information

No response