Fix sunlight error

[zhuxudong]

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• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)

What is the current behavior? (You can also link to an open issue here)

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Other information:

[codecov]

Codecov Report

Attention: 133 lines in your changes are missing coverage. Please review.

Comparison is base (e524dd2) 65.07% compared to head (f1a483e) 66.72%.
Report is 31 commits behind head on dev/1.2.

❗ Current head f1a483e differs from pull request most recent head 3bff810. Consider uploading reports for the commit 3bff810 to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##           dev/1.2    #1857      +/-   ##
===========================================
+ Coverage    65.07%   66.72%   +1.64%     
===========================================
  Files          473      472       -1     
  Lines        23801    23800       -1     
  Branches      3381     3394      +13     
===========================================
+ Hits         15488    15880     +392     
+ Misses        7116     6735     -381     
+ Partials      1197     1185      -12     

Files	Coverage Δ
packages/core/src/2d/enums/SpriteModifyFlags.ts	100.00% <ø> (ø)
packages/core/src/2d/sprite/Sprite.ts	96.80% <100.00%> (+0.01%)	⬆️
packages/core/src/Engine.ts	87.69% <100.00%> (+0.65%)	⬆️
packages/core/src/Entity.ts	85.58% <100.00%> (+0.17%)	⬆️
packages/core/src/RenderPipeline/RenderQueue.ts	47.27% <100.00%> (+0.60%)	⬆️
packages/core/src/animation/Animator.ts	63.48% <ø> (+1.11%)	⬆️
packages/core/src/asset/ResourceManager.ts	60.28% <100.00%> (ø)
packages/core/src/clone/CloneManager.ts	78.84% <100.00%> (+0.84%)	⬆️
packages/core/src/clone/ComponentCloner.ts	100.00% <ø> (ø)
packages/core/src/lighting/Light.ts	92.30% <100.00%> (ø)
... and 32 more

... and 44 files with indirect coverage changes

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