fix jsx runtime when has no kids need delete props.children attr

[RosApr]

when jsx render mode, all children is in props which means if formatted kids array length equal zero, we need delete props children attribute

[codecov-commenter]

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.32%. Comparing base (05d20e5) to head (6813b87).
⚠️ Report is 1 commits behind head on master.
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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #404      +/-   ##
==========================================
+ Coverage   94.31%   94.32%   +0.01%     
==========================================
  Files           8        8              
  Lines         879      881       +2     
  Branches      198      199       +1     
==========================================
+ Hits          829      831       +2     
  Misses         50       50              

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