fix(module: statistic): CountDown value can't update in background

[WhyILoveSpringRoll]

🤔 This is a ...

• New feature
• Bug fix
• Site / documentation update
• Demo update
• Component style update
• Bundle size optimization
• Performance optimization
• Refactoring
• Code style optimization
• Test Case
• Branch merge
• Other (about what?)

🔗 Related issue link

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	Fix the bug that countdown will not refresh in the background
🇨🇳 Chinese	修复CountDown在后台不会刷新的问题

☑️ Self Check before Merge

⚠️ Please check all items below before review. ⚠️

• Doc is updated/provided or not needed
• Demo is updated/provided or not needed
• Changelog is provided or not needed

[github-actions]

[codecov]

Codecov Report

Merging #2598 (95103cc) into feature (5d127bf) will increase coverage by 1.65%.
The diff coverage is 0.00%.

@@             Coverage Diff             @@
##           feature    #2598      +/-   ##
===========================================
+ Coverage    29.21%   30.86%   +1.65%     
===========================================
  Files          504      542      +38     
  Lines        34200    26343    -7857     
  Branches         0      260     +260     
===========================================
- Hits          9990     8131    -1859     
+ Misses       24210    18172    -6038     
- Partials         0       40      +40     

Impacted Files	Coverage Δ
components/statistic/CountDown.razor.cs	0.00% <0.00%> (ø)
components/core/Helpers/MemberPath/PathNode.cs	46.15% <0.00%> (-8.85%)	⬇️
components/core/Reflection/TypeDefined.cs	77.77% <0.00%> (-7.94%)	⬇️
components/input/InputGroup.razor.cs	87.50% <0.00%> (-6.95%)	⬇️
components/core/Helpers/DateHelper.cs	85.33% <0.00%> (-4.90%)	⬇️
...ponents/date-picker/types/DatePickerPlaceholder.cs	22.72% <0.00%> (-4.20%)	⬇️
...onents/date-picker/internal/DatePickerHeader.razor	41.86% <0.00%> (-3.21%)	⬇️
...ponents/core/Component/Overlay/type/TriggerType.cs	81.25% <0.00%> (-2.97%)	⬇️
components/core/Base/AntComponentBase.cs	53.57% <0.00%> (-2.68%)	⬇️
components/menu/SubMenu.razor	63.93% <0.00%> (-2.30%)	⬇️
... and 444 more

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