Reticulate discovering Windows App Store Python

[t-kalinowski]

On a Windows machine with multiple Python installations, including a pyenv installation as well as the Windows App Store version of Python, reticulate appears to be selecting the Windows App Store Python over others. Reticulate should avoid using the App Store Python, as it is often incomplete or generally problematic.

> keras3::install_keras(backend = "tensorflow")
Warning message:
In FUN(X[[i]], ...) :
  running command '"C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.11_3.11.2544.0_x64__qbz5n2kfra8p0\python.exe" -c "import sys; print(sys.platform)"' had status 127

[t-kalinowski]

Full traceback, kindly provided by @juliasilge

> keras3::install_keras()
Error in `FUN()`:
! (converted from warning) running command '"C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.11_3.11.2544.0_x64__qbz5n2kfra8p0\python.exe" -c "import sys; print(sys.platform)"' had status 127
Hide Traceback
    ▆
 1. └─keras3::install_keras()
 2.   └─reticulate::virtualenv_create(...)
 3.     └─reticulate::virtualenv_starter(version)
 4.       ├─reticulate (local) find_starters(py_exe())
 5.       └─reticulate::py_exe()
 6.         └─reticulate::py_discover_config()
 7.           └─base::vapply(...)
 8.             └─base (local) FUN(X[[i]], ...)