patchbomb: don't test ambiguous address
This is a bug in Python's `email` package and shouldn't be relied on.
Python 3.12 has fixed this problem¹ and raises an exception. We keep the
multiple `-t` because this is still relevant for testing.
[1] https://github.com/python/cpython/issues/102988
[2] https://docs.python.org/3/whatsnew/changelog.html
.. Common link and substitution definitions.
.. |hg(1)| replace:: **hg**\ (1)
.. _hg(1): hg.1.html
.. |hgrc(5)| replace:: **hgrc**\ (5)
.. _hgrc(5): hgrc.5.html
.. |hgignore(5)| replace:: **hgignore**\ (5)
.. _hgignore(5): hgignore.5.html