Embedding: TypeError: signal handler must be signal.SIG_IGN, signal.SIG_DFL, or a callable object

Bug report

Bug description:

When using PEP 578 and 551 entry points to log python activity on Fedora-41, it results in above error.
setting TERM=dumb is a valid workaround

build ok (tested on Fedora 41/python 3.13.2)
usage nok (TypeError, see readme.md)

$ ./spython
Python 3.13.2 (main, Feb  4 2025, 00:00:00) [GCC 14.2.1 20250110 (Red Hat 14.2.1-7)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> print("hello")
Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "/usr/lib64/python3.13/_pyrepl/__main__.py", line 6, in <module>
    __pyrepl_interactive_console()
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/lib64/python3.13/_pyrepl/main.py", line 59, in interactive_console
    run_multiline_interactive_console(console)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
  File "/usr/lib64/python3.13/_pyrepl/simple_interact.py", line 143, in run_multiline_interactive_console
    statement = multiline_input(more_lines, ps1, ps2)
  File "/usr/lib64/python3.13/_pyrepl/readline.py", line 389, in multiline_input
    return reader.readline()
           ~~~~~~~~~~~~~~~^^
  File "/usr/lib64/python3.13/_pyrepl/reader.py", line 806, in readline
    self.restore()
    ~~~~~~~~~~~~^^
  File "/usr/lib64/python3.13/_pyrepl/reader.py", line 659, in restore
    self.console.restore()
    ~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/lib64/python3.13/_pyrepl/unix_console.py", line 380, in restore
    signal.signal(signal.SIGWINCH, self.old_sigwinch)
    ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib64/python3.13/signal.py", line 58, in signal
    handler = _signal.signal(_enum_to_int(signalnum), _enum_to_int(handler))
TypeError: signal handler must be signal.SIG_IGN, signal.SIG_DFL, or a callable object

Follow-up of
https://github.com/juju4/spython/tree/devel-journald/journald (code)
https://github.com/zooba/spython/issues/13

CPython versions tested on:

3.13

Operating systems tested on:

Linux

Commencez par reproduire la session ./spython sur Fedora 41 avec Python 3.13.2, en comparant le fonctionnement normal avec TERM=dumb. Lisez les chemins du traceback dans _pyrepl/unix_console.py et signal.py, en vous concentrant sur restore() et le gestionnaire SIGWINCH. Le travail est terminé lorsque la console interactive intégrée fonctionne sans le contournement TERM et que le comportement est couvert par un test de régression approprié.