html_ctrl sample can only built under Linux and Mac, if Windows is enabled, we got build errors

[asmwarrior]

-------------- Build: gcc in html_ctrl (compiler: GNU GCC Compiler)---------------

[ 50.0%] g++.exe -IF:/msys2/mingw64/lib/wx/include/msw-unicode-3.2 -IF:/msys2/mingw64/include/wx-3.2 -mthreads -D_FILE_OFFSET_BITS=64 -DWXUSINGDLL -D__WXMSW__ -DHAVE_W32API_H -D_UNICODE -fmessage-length=0 -pipe  -c F:\code\cb_projects_for_wxWidgets\samples\html\htmlctrl\htmlctrl.cpp -o .objs\gcc\htmlctrl\htmlctrl.o
F:\code\cb_projects_for_wxWidgets\samples\html\htmlctrl\htmlctrl.cpp:32:10: fatal error: wx/html/webkit.h: No such file or directory
   32 | #include "wx/html/webkit.h"
      |          ^~~~~~~~~~~~~~~~~~
compilation terminated.
Process terminated with status 1 (0 minute(s), 1 second(s))
1 error(s), 0 warning(s) (0 minute(s), 1 second(s))