fix: nacos service discovery request lacks retries after failure #12734
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Description
After confirmation, the problem described in the original issue also exists in nacos service discovery. Currently, if multiple nacos nodes are configured, a request will randomly select one; if that node fails, the request can only be made again during the next synchronization.
This PR optimizes this behavior so that when a request from one node fails, it will resend the request to other nodes.
Which issue(s) this PR fixes:
Fixes #12610
Checklist