Fix VertexData2D.triangles reference error when change DrawMode to Tiled

[cptbtptpbcptdtptp]

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[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (249e2cb) 65.09% compared to head (ba6ef22) 65.01%.
Report is 1 commits behind head on main.

❗ Current head ba6ef22 differs from pull request most recent head 60f58c2. Consider uploading reports for the commit 60f58c2 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1817      +/-   ##
==========================================
- Coverage   65.09%   65.01%   -0.08%     
==========================================
  Files         473      473              
  Lines       23773    23757      -16     
  Branches     3368     3369       +1     
==========================================
- Hits        15475    15446      -29     
- Misses       7102     7113      +11     
- Partials     1196     1198       +2     

Files	Coverage Δ
...ges/core/src/2d/assembler/SimpleSpriteAssembler.ts	95.00% <100.00%> (-0.13%)	⬇️
...ges/core/src/2d/assembler/SlicedSpriteAssembler.ts	96.61% <100.00%> (-0.69%)	⬇️
...ages/core/src/2d/assembler/TiledSpriteAssembler.ts	98.78% <100.00%> (+0.40%)	⬆️

... and 3 files with indirect coverage changes

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