gh-117711: Only check for 'test/wheeldata' when it's actually used (#117712)

It's possible to build Python with option `--with-wheel-pkg-dir`
pointing to a custom wheel directory. Don't include the directory in the test
set if the wheels are used from a different location.

Co-authored-by: Miro HronĨok <miro@hroncok.cz>
1 file changed