refactor: optimize the update method for the number of tag associated with posts

[guqing]

What type of PR is this?

/kind improvement
/area core

What this PR does / why we need it:

优化标签关联的文章数量的更新方式以降低标签太多时对 CPU 的消耗

how to test it?
测试文章关联标签、取消关联、更新关联、删除文章到回收站、彻底删除文章时标签对应的文章可见文章数量和所有文章数量是否正确

Does this PR introduce a user-facing change?

优化标签关联的文章数量的更新方式以降低标签太多时对 CPU 的消耗

[codecov]

Codecov Report

Attention: Patch coverage is 31.25000% with 77 lines in your changes are missing coverage. Please review.

Project coverage is 56.69%. Comparing base (5fdf6c0) to head (b450ce8).
Report is 50 commits behind head on main.

Files	Patch %	Lines
...java/run/halo/app/content/TagPostCountUpdater.java	22.97%	57 Missing ⚠️
...o/app/core/extension/reconciler/TagReconciler.java	63.63%	7 Missing and 1 partial ⚠️
...java/run/halo/app/event/post/PostDeletedEvent.java	0.00%	5 Missing ⚠️
...ain/java/run/halo/app/infra/SchemeInitializer.java	37.50%	5 Missing ⚠️
.../java/run/halo/app/core/extension/content/Tag.java	0.00%	1 Missing ⚠️
.../app/core/extension/reconciler/PostReconciler.java	50.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #5422      +/-   ##
============================================
- Coverage     56.91%   56.69%   -0.22%     
- Complexity     3319     3334      +15     
============================================
  Files           587      591       +4     
  Lines         18968    19185     +217     
  Branches       1401     1392       -9     
============================================
+ Hits          10795    10877      +82     
- Misses         7594     7731     +137     
+ Partials        579      577       -2     

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[sonarcloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.3% Duplication on New Code

See analysis details on SonarCloud

[guqing]

/milestone 2.14.x

[LIlGG]

/lgtm

[ruibaby]

/lgtm

经过实际测试，文章关联标签、取消关联、更新关联、删除文章到回收站、彻底删除文章等操作之后，后台显示的数量和前台显示的数量均符合预期。

[f2c-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ruibaby

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