[3.14] gh-141808: Don't remove the JIT stencils when building with PGO (GH-141809) (GH-142657)

See: https://discuss.python.org/t/building-the-jit-with-pre-built-stencils/91838/12
(cherry picked from commit 8914148151c957aebfaab1f3c890144d1b33968d)

Co-authored-by: Miro Hrončok <miro@hroncok.cz>
Co-authored-by: Mikhail Efimov <efimov.mikhail@gmail.com>