[Discussion] Upgrade HashedWheelTimer with the same class at latest Netty

[zrlw]

What is the purpose of the change?

Upgrade HashedWheelTimer content based on latest Netty's HashedWheelTimer: remove all sun.misc.Unsafe relative codes since such codes could not be compiled with JDK17+ no matter adding --add-opens java.base/sun.misc=ALL-UNNAMED to the mvn command argline or not.

Checklist

• Make sure there is a GitHub_issue field for the change.
• Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
• Write necessary unit-test to verify your logic correction. If the new feature or significant change is committed, please remember to add sample in dubbo samples project.
• Make sure gitHub actions can pass. Why the workflow is failing and how to fix it?

[codecov-commenter]

Codecov Report

❌ Patch coverage is 70.10309% with 29 lines in your changes missing coverage. Please review.
✅ Project coverage is 58.76%. Comparing base (0286216) to head (af16f88).
⚠️ Report is 4 commits behind head on 3.3.

Files with missing lines	Patch %	Lines
...rg/apache/dubbo/common/timer/HashedWheelTimer.java	70.10%	21 Missing and 8 partials ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##                3.3   #15739      +/-   ##
============================================
- Coverage     60.67%   58.76%   -1.91%     
+ Complexity    10157       15   -10142     
============================================
  Files          1924     1938      +14     
  Lines         87086    88660    +1574     
  Branches      13115    13391     +276     
============================================
- Hits          52839    52104     -735     
- Misses        28759    30907    +2148     
- Partials       5488     5649     +161     

Flag	Coverage Δ
samples-tests-java21	?
samples-tests-java8	?
unit-tests-java11	59.01% <70.10%> (+0.01%)	⬆️
unit-tests-java17	58.52% <70.10%> (-0.24%)	⬇️
unit-tests-java21	58.50% <70.10%> (-0.24%)	⬇️
unit-tests-java8	58.99% <69.79%> (+0.01%)	⬆️

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