feat(#11214): Optimization method com.alibaba.nacos.naming.core.v2.client.manager.impl.ConnectionBasedClientManager.clientConnected

[Bo-Qiu]

What is the purpose of the change

feat(#11214):
Optimization method com.alibaba.nacos.naming.core.v2.client.manager.impl.ConnectionBasedClientManager.clientConnected.
Before creating a client instance, first determine whether a client instance with the same clientId already exists in clientsMap. If it exists, no invalid client instance will be created.

[codecov-commenter]

Codecov Report

Merging #11219 (d9b3587) into develop (f3fb428) will decrease coverage by 0.04%.
The diff coverage is 83.33%.

Additional details and impacted files

@@              Coverage Diff              @@
##             develop   #11219      +/-   ##
=============================================
- Coverage      54.12%   54.08%   -0.04%     
- Complexity      5580     5582       +2     
=============================================
  Files            907      907              
  Lines          28840    28846       +6     
  Branches        3190     3190              
=============================================
- Hits           15610    15602       -8     
- Misses         11886    11901      +15     
+ Partials        1344     1343       -1     

Files	Coverage Δ
.../core/v2/client/manager/ClientManagerDelegate.java	81.81% <ø> (+3.55%)	⬆️
...ent/manager/impl/EphemeralIpPortClientManager.java	66.66% <100.00%> (+2.38%)	⬆️
...nt/manager/impl/PersistentIpPortClientManager.java	78.94% <100.00%> (+2.02%)	⬆️
...ent/manager/impl/ConnectionBasedClientManager.java	67.79% <66.66%> (-6.75%)	⬇️

... and 11 files with indirect coverage changes

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[KomachiSion]

拒绝，多态方法用于方便扩展和复用使用设计，不给予删除