Silence a legitimate sanitizer warning that's enabled by default in Android NDK 29

[matthargett]

Silence a legitimate vfptr sanitizer warning that is on by default in Android NDK 29's clang. Stripping RTTI from a vfptr is usually a no-no for debugging and field-supportability reasons, but it's intrinsic to how ObjectWrap works right now.

This was found whilst porting BabylonNative (which implements NAPI for add-ons) to Android XR, and was integrated (and tested) there as a local patch:
https://github.com/BabylonJS/JsRuntimeHost/pull/118/files#diff-a9d53b78150c809d9bf63a90260b4f823918bc6e6d9c3e02eb68d855bf9deda1R4499

[codecov-commenter]

Codecov Report

❌ Patch coverage is 75.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 63.50%. Comparing base (60d439e) to head (9affd1c).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
napi-inl.h	75.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1692      +/-   ##
==========================================
+ Coverage   63.48%   63.50%   +0.01%     
==========================================
  Files           3        3              
  Lines        2046     2047       +1     
  Branches      728      728              
==========================================
+ Hits         1299     1300       +1     
  Misses        162      162              
  Partials      585      585              

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