test_remote_pdb fails on FreeBSD: Remote debugging is not supported on this platform

[vstinner]

Example: https://buildbot.python.org/#/builders/1223/builds/5984

ERROR: test_keyboard_interrupt (test.test_remote_pdb.PdbConnectTestCase.test_keyboard_interrupt)
Test that sending keyboard interrupt breaks into pdb.
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/buildbot/buildarea/3.x.ware-freebsd/build/Lib/test/test_remote_pdb.py", line 520, in test_keyboard_interrupt
    self._send_interrupt(process.pid)
    ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
  File "/buildbot/buildarea/3.x.ware-freebsd/build/Lib/test/test_remote_pdb.py", line 366, in _send_interrupt
    sys.remote_exec(pid, interrupt_script)
    ~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^
RuntimeError: Remote debugging is not supported on this platform

cc @pablogsal

Linked PRs

• gh-132950: Skip test_remote_pdb if remote exec is disabled #132951
• gh-132950: Check for Py_SUPPORTS_REMOTE_DEBUG in sys.is_remote_debug_enabled #132959
• gh-132950: Log is_remote_debug_enabled() in pythoninfo #132965

[gaogaotiantian]

Should we close this now?