[Dubbo-6034] Fix the RegistyUrl mismatching to ZoneAwareClusterInvoker.PREFER_REGISTRY_KEY

[plusmancn]

What is the purpose of the change

Fixes #6034

When I have follow setting, the final registry URL is: nacos://127.0.0.1:8849/....?preferred=true.

<dubbo:registry address="nacos://127.0.0.1:8849" preferred="true"/>

Because of ZoneAwareClusterInvoker.PREFER_REGISTRY_KEY is mismatching to RegistryConfig.preferred key, the following code can't works as expect.

// method => org.apache.dubbo.rpc.cluster.support.registry.ZoneAwareClusterInvoker#doInvoke
if (clusterInvoker.isAvailable() && clusterInvoker.getRegistryUrl()
        .getParameter(PREFER_REGISTRY_KEY, false)) {
    return clusterInvoker.invoke(invocation);
}

Brief changelog

• Aliasing preferred equal to ZoneAwareClusterInvoker.PREFER_REGISTRY_KEY when invoking AbstractConfig#appendParameters method.

Verifying this change

• The final registry URL should be: nacos://127.0.0.1:8849/....?registry.preferred=true.

---

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[codecov-commenter]

Codecov Report

Merging #7788 (c05c14e) into master (1a7ca1e) will decrease coverage by 0.04%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #7788      +/-   ##
============================================
- Coverage     59.47%   59.42%   -0.05%     
  Complexity      556      556              
============================================
  Files          1083     1086       +3     
  Lines         43755    43800      +45     
  Branches       6380     6391      +11     
============================================
+ Hits          26022    26029       +7     
- Misses        14876    14899      +23     
- Partials       2857     2872      +15     

Impacted Files	Coverage Δ	Complexity Δ
...ster/support/registry/ZoneAwareClusterInvoker.java	0.00% <ø> (ø)	0.00 <0.00> (ø)
...n/java/org/apache/dubbo/config/RegistryConfig.java	86.17% <ø> (ø)	0.00 <0.00> (ø)
...in/java/org/apache/dubbo/common/utils/JVMUtil.java	81.13% <0.00%> (-11.33%)	0.00% <0.00%> (ø%)
...va/org/apache/dubbo/rpc/support/ProtocolUtils.java	61.53% <0.00%> (-8.03%)	0.00% <0.00%> (ø%)
...ng/transport/dispatcher/all/AllChannelHandler.java	82.75% <0.00%> (-6.90%)	0.00% <0.00%> (ø%)
.../rpc/protocol/dubbo/LazyConnectExchangeClient.java	49.45% <0.00%> (-4.40%)	0.00% <0.00%> (ø%)
...ava/org/apache/dubbo/rpc/filter/GenericFilter.java	37.70% <0.00%> (-3.37%)	0.00% <0.00%> (ø%)
...c/main/java/org/apache/dubbo/rpc/RpcException.java	80.00% <0.00%> (-3.34%)	0.00% <0.00%> (ø%)
.../dubbo/remoting/transport/netty4/NettyChannel.java	61.38% <0.00%> (-1.99%)	0.00% <0.00%> (ø%)
...he/dubbo/registry/multicast/MulticastRegistry.java	68.37% <0.00%> (-0.94%)	0.00% <0.00%> (ø%)
... and 16 more

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[AlbumenJ]

Would you please add some unit test cases for this PR?

[plusmancn]

Would you please add some unit test cases for this PR?

I have finished the unit test for this PR, please have a look at it.