fix(module: tree): would not invoke CheckedKeys changed while CheckS…

[ElderJames]

…trictly was set

🤔 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

fixed #3359

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English
🇨🇳 Chinese

☑️ 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

Patch coverage has no change and project coverage change: +1.46% 🎉

Comparison is base (9826983) 45.37% compared to head (1fbef2c) 46.84%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3379      +/-   ##
==========================================
+ Coverage   45.37%   46.84%   +1.46%     
==========================================
  Files         558      558              
  Lines       26845    26843       -2     
  Branches      267      267              
==========================================
+ Hits        12181    12574     +393     
+ Misses      14624    14229     -395     
  Partials       40       40              

Files Changed	Coverage Δ
components/tree/TreeNode.razor.cs	27.27% <0.00%> (-0.09%)	⬇️

... and 22 files with indirect coverage changes

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