[3.0] Improve dynamic configuration initialization

[kylixs]

What is the purpose of the change

• Initialize dynamic configuration in DubboBootstrap only
• Get dynamic configuration from Environment only

Brief changelog

Verifying this change

Checklist

• 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.
• Each commit in the pull request should have a meaningful subject line and body.
• Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
• Check if is necessary to patch to Dubbo 3 if you are work on Dubbo 2.7
• Write necessary unit-test to verify your logic correction, more mock a little better when cross module dependency exist. If the new feature or significant change is committed, please remember to add sample in dubbo samples project.
• Add some description to dubbo-website project if you are requesting to add a feature.
• GitHub Actions works fine on your own branch.
• If this contribution is large, please follow the Software Donation Guide.

[codecov-commenter]

Codecov Report

Merging #8294 (3df8d95) into 3.0 (3eff57a) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##                3.0    #8294      +/-   ##
============================================
- Coverage     64.03%   64.02%   -0.02%     
- Complexity      310      313       +3     
============================================
  Files          1077     1077              
  Lines         45525    45526       +1     
  Branches       6840     6843       +3     
============================================
- Hits          29152    29147       -5     
- Misses        13146    13154       +8     
+ Partials       3227     3225       -2     

Impacted Files	Coverage Δ
...mmon/config/configcenter/DynamicConfiguration.java	72.22% <ø> (-7.78%)	⬇️
...overnance/DefaultGovernanceRuleRepositoryImpl.java	100.00% <100.00%> (ø)
.../apache/dubbo/config/bootstrap/DubboBootstrap.java	70.73% <100.00%> (+0.12%)	⬆️
...nfigcenter/nop/NopDynamicConfigurationFactory.java	50.00% <0.00%> (-50.00%)	⬇️
...nfig/configcenter/nop/NopDynamicConfiguration.java	25.00% <0.00%> (-37.50%)	⬇️
...figcenter/AbstractDynamicConfigurationFactory.java	75.00% <0.00%> (-25.00%)	⬇️
...in/java/org/apache/dubbo/common/utils/JVMUtil.java	81.13% <0.00%> (-11.33%)	⬇️
...ng/transport/dispatcher/all/AllChannelHandler.java	89.65% <0.00%> (-6.90%)	⬇️
...dubbo/remoting/exchange/support/DefaultFuture.java	89.47% <0.00%> (-4.39%)	⬇️
...keeper/ZookeeperServiceDiscoveryChangeWatcher.java	88.88% <0.00%> (-3.71%)	⬇️
... and 13 more

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