KWSys: Update to version as of 2021-11-01
In particular, get utils/kwsys!236 (merged), utils/kwsys!238 (merged), utils/kwsys!239 (merged), and utils/kwsys!240 (merged). This allows find_program
to see Windows app exec links.
Update CMake's find_program
implementation to avoid finding the %USERPROFILE%\AppData\Local\Microsoft\WindowsApps\python.exe
Windows app exec link that references AppInstallerPythonRedirector
instead of a real python.
Fixes: #22743 (closed)
Edited by Brad King