process fails to compile in boost 1.86.0 on windows

I'm compiling boost on windows and boost process fails to compile.

Compilation done by following commands in boost src folder.
```
bootstrap.bat
b2.exe -d4 --build-type=minimal stage variant=release address-model=32 link=shared threading=multi runtime-link=shared debug-symbols=on debug-store=database -j%NUMBER_OF_PROCESSORS% --layout=
system --with-process --build-dir=..\boost_build --stagedir=..\boost_stage\ %XP_TOOLSET_DEFINES% > bjam.log 2>&1
```

I've used `--with-process` just to cut down compile time and log to reproduce problem, same happens if this flag is not used.
After this is done several libs are compiled in `..\boost_stage\lib` (atomic and filesystem) but process is not.

Log file is attached [bjam.log.zip](https://github.com/user-attachments/files/17575091/bjam.log.zip), I think the root cause are those compilation errors:
```
Executing using a command file and the shell: cmd.exe /Q/C
Command string for CreateProcessA(): 'cmd.exe /Q/C "C:\Users\Admin\AppData\Local\Temp\jam15820-05-00.bat"'
compile-c-c++ ..\boost_build\boost\bin.v2\libs\process\build\msvc-14.3\release\x86_32\debug-store-database\debug-symbols-on\threading-multi\ext\exe.obj

call "..\boost_build\boost\bin.v2\standalone\msvc\msvc-14.3\address-model-32\architecture-x86\msvc-setup.bat" >nul
cl /Zm800 -nologo "libs\process\src\ext\exe.cpp" -c -Fo"..\boost_build\boost\bin.v2\libs\process\build\msvc-14.3\release\x86_32\debug-store-database\debug-symbols-on\threading-multi\ext\exe.obj" /Fd"..\boost_build\boost\bin.v2\libs\process\build\msvc-14.3\release\x86_32\debug-store-database\debug-symbols-on\threading-multi\ext\exe.pdb" -TP /wd4675 /EHs /GR /Zc:throwingNew /O2 /Zi /Ob2 /W3 /MD /Zc:forScope /Zc:wchar_t /Zc:inline /Gw /bigobj -DBOOST_ALL_NO_LIB=1 -DBOOST_ASIO_NO_DEPRECATED -DBOOST_ATOMIC_DYN_LINK=1 -DBOOST_COBALT_USE_STD_PMR=1 -DBOOST_FILESYSTEM_DYN_LINK=1 -DBOOST_PROCESS_DYN_LINK=1 -DBOOST_PROCESS_SOURCE=1 -DNDEBUG -DNTDDI_VERSION=0x05010000 -DPSAPI_VERSION=1 -DWIN32_LEAN_AND_MEAN -DWINVER=0x0501 -D_CRT_SECURE_NO_DEPRECATE -D_SCL_SECURE_NO_WARNINGS -D_WIN32_WINNT=0x0501 "-I."

exe.cpp
libs\process\src\ext\exe.cpp(78): error C3861: 'QueryFullProcessImageNameW': identifier not found
0.125000 sec system; 0.031250 sec user; 3.299207 sec clock
...failed compile-c-c++ ..\boost_build\boost\bin.v2\libs\process\build\msvc-14.3\release\x86_32\debug-store-database\debug-symbols-on\threading-multi\ext\exe.obj...
```

```
Command string for CreateProcessA(): 'cmd.exe /Q/C "C:\Users\Admin\AppData\Local\Temp\jam15820-01-00.bat"'
compile-c-c++ ..\boost_build\boost\bin.v2\libs\process\build\msvc-14.3\release\x86_32\debug-store-database\debug-symbols-on\threading-multi\windows\default_launcher.obj

call "..\boost_build\boost\bin.v2\standalone\msvc\msvc-14.3\address-model-32\architecture-x86\msvc-setup.bat" >nul
cl /Zm800 -nologo "libs\process\src\windows\default_launcher.cpp" -c -Fo"..\boost_build\boost\bin.v2\libs\process\build\msvc-14.3\release\x86_32\debug-store-database\debug-symbols-on\threading-multi\windows\default_launcher.obj" /Fd"..\boost_build\boost\bin.v2\libs\process\build\msvc-14.3\release\x86_32\debug-store-database\debug-symbols-on\threading-multi\windows\default_launcher.pdb" -TP /wd4675 /EHs /GR /Zc:throwingNew /O2 /Zi /Ob2 /W3 /MD /Zc:forScope /Zc:wchar_t /Zc:inline /Gw /bigobj -DBOOST_ALL_NO_LIB=1 -DBOOST_ASIO_NO_DEPRECATED -DBOOST_ATOMIC_DYN_LINK=1 -DBOOST_COBALT_USE_STD_PMR=1 -DBOOST_FILESYSTEM_DYN_LINK=1 -DBOOST_PROCESS_DYN_LINK=1 -DBOOST_PROCESS_SOURCE=1 -DNDEBUG -DNTDDI_VERSION=0x05010000 -DPSAPI_VERSION=1 -DWIN32_LEAN_AND_MEAN -DWINVER=0x0501 -D_CRT_SECURE_NO_DEPRECATE -D_SCL_SECURE_NO_WARNINGS -D_WIN32_WINNT=0x0501 "-I."

default_launcher.cpp
D:\Projects\boost\boost/process/v2/windows/default_launcher.hpp(220): error C3646: 'startup_info': unknown override specifier
D:\Projects\boost\boost/process/v2/windows/default_launcher.hpp(220): error C2059: syntax error: '{'
D:\Projects\boost\boost/process/v2/windows/default_launcher.hpp(220): error C2334: unexpected token(s) preceding '{'; skipping apparent function body
0.078125 sec system; 0.046875 sec user; 3.474433 sec clock
...failed compile-c-c++ ..\boost_build\boost\bin.v2\libs\process\build\msvc-14.3\release\x86_32\debug-store-database\debug-symbols-on\threading-multi\windows\default_launcher.obj...
```

```
Command string for CreateProcessA(): 'cmd.exe /Q/C "C:\Users\Admin\AppData\Local\Temp\jam15820-04-00.bat"'
compile-c-c++ ..\boost_build\boost\bin.v2\libs\process\build\msvc-14.3\release\x86_32\debug-store-database\debug-symbols-on\threading-multi\environment.obj

call "..\boost_build\boost\bin.v2\standalone\msvc\msvc-14.3\address-model-32\architecture-x86\msvc-setup.bat" >nul
cl /Zm800 -nologo "libs\process\src\environment.cpp" -c -Fo"..\boost_build\boost\bin.v2\libs\process\build\msvc-14.3\release\x86_32\debug-store-database\debug-symbols-on\threading-multi\environment.obj" /Fd"..\boost_build\boost\bin.v2\libs\process\build\msvc-14.3\release\x86_32\debug-store-database\debug-symbols-on\threading-multi\environment.pdb" -TP /wd4675 /EHs /GR /Zc:throwingNew /O2 /Zi /Ob2 /W3 /MD /Zc:forScope /Zc:wchar_t /Zc:inline /Gw /bigobj -DBOOST_ALL_NO_LIB=1 -DBOOST_ASIO_NO_DEPRECATED -DBOOST_ATOMIC_DYN_LINK=1 -DBOOST_COBALT_USE_STD_PMR=1 -DBOOST_FILESYSTEM_DYN_LINK=1 -DBOOST_PROCESS_DYN_LINK=1 -DBOOST_PROCESS_SOURCE=1 -DNDEBUG -DNTDDI_VERSION=0x05010000 -DPSAPI_VERSION=1 -DWIN32_LEAN_AND_MEAN -DWINVER=0x0501 -D_CRT_SECURE_NO_DEPRECATE -D_SCL_SECURE_NO_WARNINGS -D_WIN32_WINNT=0x0501 "-I."

environment.cpp
D:\Projects\boost\boost/process/v2/windows/default_launcher.hpp(220): error C3646: 'startup_info': unknown override specifier
D:\Projects\boost\boost/process/v2/windows/default_launcher.hpp(220): error C2059: syntax error: '{'
D:\Projects\boost\boost/process/v2/windows/default_launcher.hpp(220): error C2334: unexpected token(s) preceding '{'; skipping apparent function body
0.093750 sec system; 0.031250 sec user; 3.934528 sec clock
...failed compile-c-c++ ..\boost_build\boost\bin.v2\libs\process\build\msvc-14.3\release\x86_32\debug-store-database\debug-symbols-on\threading-multi\environment.obj...
```

How can this be fixed?

Thank you very much in advance :).