[3.13] gh-125313: Prefer `sys.base_*` paths in `Py_Get(Exec)Prefix` deprecation notes (GH-125317) (#125776)

gh-125313: Prefer `sys.base_*` paths in `Py_Get(Exec)Prefix` deprecation notes (GH-125317)

Prefer `sys.base_*` paths in `Py_Get(Exec)Prefix` deprecation notes.

(cherry picked from commit 7d88140d5299bd086434840db66ede8ccd01a688)

Signed-off-by: y5c4l3 <y5c4l3@proton.me>
Co-authored-by: Y5 <124019959+y5c4l3@users.noreply.github.com>