fix: 修复模型__clone方法使用了未引用的类导致异常

[gitlilimin]

Model类的__clone()方法中抛出了未引用的InvalidArgumentException类，一般情况不会报错，但在极端情况下访问__clone()方法时会抛出意料之外的错误

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 52.06%. Comparing base (006ad4b) to head (bb24b50).
⚠️ Report is 17 commits behind head on 4.0.

Additional details and impacted files

@@            Coverage Diff            @@
##                4.0     #816   +/-   ##
=========================================
  Coverage     52.06%   52.06%           
  Complexity     3507     3507           
=========================================
  Files            74       74           
  Lines          8313     8313           
=========================================
  Hits           4328     4328           
  Misses         3985     3985           

Flag	Coverage Δ
unittests	52.06% <ø> (ø)

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[gitlilimin]

这个问题虽然一般不会碰到，但在使用其他代码编辑器例如vscode等的时候，编辑器的静态分析会识别到这个错误，从而导致继承了Model类的所有类都被认为存在错误，这是很困扰的。希望尽快合并

[gitlilimin]

@liu21st 大佬请关注一下，这个小问题很影响代码静态分析