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

首先，使用連結的建置指令稿重現 XNU xnu-8792.41.9 的建置，並檢查針對 installfile.c 的 CodeQL 擷取器呼叫。調查原始碼封存檔不包含已編譯的 .c 檔案，或擷取器無法開啟這些檔案的原因。當受影響的原始碼檔案存在於資料庫中，且沒有回報的災難性錯誤時，即視為完成。

由索引模型根據 Issue 內容生成。