Run core tests in Safari. Partially addresses https://github.com/pyodide/pyodide/issues/989

It runs, but there are several test failures, I'll open separate issues about those.
package:
  name: more-itertools
  version: 8.13.0
  top-level:
    - more_itertools
source:
  sha256: c5122bffc5f104d37c1626b8615b511f3427aa5389b94d61e5ef8236bfbc3ddb
  url: https://files.pythonhosted.org/packages/bd/3f/c4b3dbd315e248f84c388bd4a72b131a29f123ecacc37ffb2b3834546e42/more_itertools-8.13.0-py3-none-any.whl
about:
  PyPI: https://pypi.org/project/more-itertools
  summary: More routines for operating on iterables, beyond itertools

package:
  name: more-itertools
  version: 8.13.0
  top-level:
    - more_itertools
source:
  sha256: c5122bffc5f104d37c1626b8615b511f3427aa5389b94d61e5ef8236bfbc3ddb
  url: https://files.pythonhosted.org/packages/bd/3f/c4b3dbd315e248f84c388bd4a72b131a29f123ecacc37ffb2b3834546e42/more_itertools-8.13.0-py3-none-any.whl
about:
  PyPI: https://pypi.org/project/more-itertools
  summary: More routines for operating on iterables, beyond itertools
