CMake: Fix Python_FIND_STRATEGY in vtk-config.cmake
Fix Python_FIND_STRATEGY in vtk-config.cmake to ensure LOCATION is used and the first Python found is used instead of the most recent one
Related to: https://discourse.paraview.org/t/python3-not-found/13733
Backport: release Backport: paraview/release
Edited by Mathieu Westphal (Kitware)