Missing Source Files from Database for XNU

Hi,

Most of the `.c` files are missing after compilation of XNU in DB.

### Log entry:
```
/opt/homebrew/Caskroom/codeql/2.11.4/codeql/cpp/tools/osx64/extractor --trapfolder /private/tmp/xnu/build-xnu-xnu-8792.41.9/xnu-xnu-8792.41.9/xnu-database/trap/cpp --src_archive /private/tmp/xnu/build-xnu-xnu-8792.41.9/xnu-xnu-8792.41.9/xnu-database/src --mimic_config /private/tmp/xnu/build-xnu-xnu-8792.41.9/xnu-xnu-8792.41.9/xnu-database/working/compiler_mimic_cache/0bf1e9bd38ad --executable_filename /private/tmp/xnu/build-xnu-xnu-8792.41.9/xnu-xnu-8792.41.9/BUILD/obj/SETUP/installfile/installfile.o -w --error_limit 1000 --disable_system_macros --variadic_macros --gcc --gnu_version 40000 --clang --isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.0.sdk -I/tmp/xnu/build-xnu-xnu-8792.41.9/xnu-xnu-8792.41.9/SETUP/installfile/ -I. --blocks -D__GCC_HAVE_DWARF2_CFI_ASM=1 -- installfile.c /tmp/xnu/build-xnu-xnu-8792.41.9/xnu-xnu-8792.41.9/SETUP/installfile/installfile.c

[E 02:03:00 36601] Warning[extractor-c++]: In construct_message: Catastrophic error: cannot open source file "installfile.c"
```

### Env:
* Builder script: https://gist.github.com/qu0dy/57145e3ca850536169566c1560fd23cd
* XNU: https://github.com/apple-oss-distributions/xnu/releases/tag/xnu-8792.41.9
* OS: MacOS Ventura 13.1 Beta 4
* Clang: 14.0.0
* CodeQL: 2.11.4
* CPU: M1 Pro

Start by reproducing the XNU xnu-8792.41.9 build with the linked builder script and review the CodeQL extractor invocation for installfile.c. Investigate why the source archive does not contain the compiled .c files or why the extractor cannot open them. Done means the affected source files are present in the database without the reported catastrophic error.

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