Fix PointerManager raycast bug

[cptbtptpbcptdtptp]

Starting from the last camera of the last scene.

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.04% 🎉

Comparison is base (c26f42c) 65.04% compared to head (4228a18) 65.09%.
Report is 4 commits behind head on main.

❗ Current head 4228a18 differs from pull request most recent head c48f47b. Consider uploading reports for the commit c48f47b to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1779      +/-   ##
==========================================
+ Coverage   65.04%   65.09%   +0.04%     
==========================================
  Files         473      473              
  Lines       23641    23641              
  Branches     3362     3362              
==========================================
+ Hits        15378    15388      +10     
+ Misses       7057     7051       -6     
+ Partials     1206     1202       -4     

Files Changed	Coverage Δ
packages/core/src/ComponentsManager.ts	80.86% <100.00%> (ø)
packages/core/src/input/pointer/PointerManager.ts	92.34% <100.00%> (ø)
packages/shader-lab/src/RuntimeContext.ts	83.43% <100.00%> (+0.59%)	⬆️

... and 3 files with indirect coverage changes

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[jtabibito]

+1