[3.0] Fix when subscribing, the check configuration section is unavailable(#8841)

[stone-98]

What is the purpose of the change

Fix #8841 on 3.0

[BurningCN]

LGTM

[codecov-commenter]

Codecov Report

Merging #8879 (cf5da3e) into 3.0 (9a0629c) will increase coverage by 0.04%.
The diff coverage is 66.66%.

@@             Coverage Diff              @@
##                3.0    #8879      +/-   ##
============================================
+ Coverage     63.87%   63.91%   +0.04%     
  Complexity      314      314              
============================================
  Files          1169     1169              
  Lines         49239    49240       +1     
  Branches       7366     7366              
============================================
+ Hits          31450    31471      +21     
+ Misses        14368    14350      -18     
+ Partials       3421     3419       -2     

Impacted Files	Coverage Δ
...he/dubbo/registry/zookeeper/ZookeeperRegistry.java	66.04% <66.66%> (+0.21%)	⬆️
...dubbo/remoting/exchange/support/DefaultFuture.java	88.28% <0.00%> (-4.51%)	⬇️
...ng/transport/dispatcher/WrappedChannelHandler.java	63.04% <0.00%> (-4.35%)	⬇️
...he/dubbo/remoting/transport/netty/NettyServer.java	70.17% <0.00%> (-3.51%)	⬇️
.../dubbo/remoting/transport/netty4/NettyChannel.java	65.34% <0.00%> (-1.00%)	⬇️
...a/org/apache/dubbo/rpc/model/ApplicationModel.java	79.60% <0.00%> (-0.66%)	⬇️
...apache/dubbo/common/extension/ExtensionLoader.java	81.12% <0.00%> (-0.20%)	⬇️
...ng/zookeeper/curator5/Curator5ZookeeperClient.java	61.16% <0.00%> (ø)
...etadata/report/support/AbstractMetadataReport.java	61.72% <0.00%> (+0.95%)	⬆️
.../src/main/java/org/apache/dubbo/rpc/RpcStatus.java	71.42% <0.00%> (+1.19%)	⬆️
... and 9 more

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