add final modifier for lock in FrameworkModel

[Trying-hc]

What is the purpose of the change

Brief changelog

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• Make sure there is a GitHub_issue field for the change (usually before you start working on it). Trivial changes like typos do not require a GitHub issue. Your pull request should address just this issue, without pulling in other changes - one PR resolves one issue.
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[codecov-commenter]

Codecov Report

Merging #10281 (9af7da6) into 3.0 (6c1e456) will decrease coverage by 0.20%.
The diff coverage is 66.66%.

@@             Coverage Diff              @@
##                3.0   #10281      +/-   ##
============================================
- Coverage     65.70%   65.50%   -0.21%     
+ Complexity      320      318       -2     
============================================
  Files          1233     1233              
  Lines         53730    53730              
  Branches       8111     8110       -1     
============================================
- Hits          35304    35195     -109     
- Misses        14589    14692     +103     
- Partials       3837     3843       +6     

Impacted Files	Coverage Δ
...ava/org/apache/dubbo/rpc/model/FrameworkModel.java	91.44% <66.66%> (ø)
...dubbo/remoting/zookeeper/ZookeeperTransporter.java	55.55% <0.00%> (-33.34%)	⬇️
...ng/zookeeper/curator5/Curator5ZookeeperClient.java	43.47% <0.00%> (-27.06%)	⬇️
.../remoting/api/SingleProtocolConnectionManager.java	61.53% <0.00%> (-23.08%)	⬇️
...bo/rpc/protocol/dubbo/DecodeableRpcInvocation.java	70.19% <0.00%> (-10.58%)	⬇️
...e/dubbo/remoting/transport/netty/NettyChannel.java	52.27% <0.00%> (-7.96%)	⬇️
.../common/threadpool/serial/SerializingExecutor.java	70.37% <0.00%> (-7.41%)	⬇️
...e/dubbo/rpc/protocol/tri/transport/WriteQueue.java	73.80% <0.00%> (-4.77%)	⬇️
.../dubbo/registry/client/metadata/MetadataUtils.java	67.32% <0.00%> (-3.97%)	⬇️
.../apache/dubbo/remoting/transport/CodecSupport.java	80.30% <0.00%> (-3.04%)	⬇️
... and 16 more

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