When running a 64-bit version of GraalPy (either x86_64 or aarch64), packaging returns the wrong platform tag (either i686 or armv8l).

Attempt to fix in #614 which is now closed.
Hopefully, python/cpython#103483 might help in the future but, for now and for already released python interpreters versions, a fix is needed in packaging.

cc @timfel