simplify nacos app labels collector and log fix.

[shiyiyue1102]

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[codecov-commenter]

Codecov Report

Attention: Patch coverage is 63.29114% with 29 lines in your changes are missing coverage. Please review.

Project coverage is 68.30%. Comparing base (9fd6ff6) to head (b19329e).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@              Coverage Diff              @@
##             develop   #11867      +/-   ##
=============================================
+ Coverage      67.95%   68.30%   +0.35%     
  Complexity      8977     8977              
=============================================
  Files           1245     1239       -6     
  Lines          40657    40560      -97     
  Branches        4308     4311       +3     
=============================================
+ Hits           27629    27706      +77     
+ Misses         11041    10865     -176     
- Partials        1987     1989       +2     

Files	Coverage Δ
...n/java/com/alibaba/nacos/api/common/Constants.java	58.33% <ø> (ø)
...libaba/nacos/client/env/NacosClientProperties.java	100.00% <ø> (ø)
...a/nacos/common/remote/client/RpcClientFactory.java	92.00% <ø> (+22.30%)	⬆️
...server/service/dump/disk/ConfigRawDiskService.java	78.26% <ø> (+14.09%)	⬆️
...er/service/dump/disk/ConfigRocksDbDiskService.java	83.22% <ø> (+7.61%)	⬆️
...mon/labels/impl/DefaultLabelsCollectorManager.java	93.75% <89.47%> (+27.08%)	⬆️
...alibaba/nacos/client/config/impl/ClientWorker.java	75.89% <53.84%> (-0.68%)	⬇️
...alibaba/nacos/client/env/SearchableProperties.java	91.86% <14.28%> (-6.88%)	⬇️
...cos/common/labels/impl/DefaultLabelsCollector.java	64.28% <62.50%> (-35.72%)	⬇️

... and 10 files with indirect coverage changes

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