gh-107880: Argument Clinic: Fix regression in gh-107885

[erlend-aasland]

gh-107885 taught Argument Clinic to clone to __init__ and __new__
methods, but it did not validate the requirements of those special
methods.

• Issue: Argument Clinic: make it possible to clone __init__ functions #107880

[AlexWaygood]

I think the name's fine

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot wasm32-emscripten node (pthreads) 3.x has failed when building commit e90036c.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/1050/builds/2778) and take a look at the build logs.
4. Check if the failure is related to this commit (e90036c) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/1050/builds/2778

Summary of the results of the build (if available):

== Tests result: ENV CHANGED ==

329 tests OK.

10 slowest tests:

• test_hashlib: 2 min 6 sec
• test_math: 1 min 30 sec
• test_tarfile: 1 min 7 sec
• test_io: 44.9 sec
• test_tokenize: 44.6 sec
• test_unparse: 29.9 sec
• test_pathlib: 29.9 sec
• test_unicodedata: 29.1 sec
• test_capi: 28.9 sec
• test_fstring: 27.3 sec

1 test altered the execution environment:
test_capi

117 tests skipped:
test.test_asyncio.test_base_events
test.test_asyncio.test_buffered_proto
test.test_asyncio.test_context
test.test_asyncio.test_eager_task_factory
test.test_asyncio.test_events test.test_asyncio.test_futures
test.test_asyncio.test_futures2 test.test_asyncio.test_locks
test.test_asyncio.test_pep492
test.test_asyncio.test_proactor_events
test.test_asyncio.test_protocols test.test_asyncio.test_queues
test.test_asyncio.test_runners
test.test_asyncio.test_selector_events
test.test_asyncio.test_sendfile test.test_asyncio.test_server
test.test_asyncio.test_sock_lowlevel test.test_asyncio.test_ssl
test.test_asyncio.test_sslproto test.test_asyncio.test_streams
test.test_asyncio.test_subprocess
test.test_asyncio.test_taskgroups test.test_asyncio.test_tasks
test.test_asyncio.test_threads test.test_asyncio.test_timeouts
test.test_asyncio.test_transports
test.test_asyncio.test_unix_events test.test_asyncio.test_waitfor
test.test_asyncio.test_windows_events
test.test_asyncio.test_windows_utils test__xxinterpchannels
test__xxsubinterpreters test_asyncgen test_clinic test_cmd_line
test_concurrent_futures test_contextlib_async test_ctypes
test_curses test_dbm_gnu test_dbm_ndbm test_devpoll test_doctest
test_docxmlrpc test_dtrace test_embed test_epoll test_faulthandler
test_fcntl test_file_eintr test_fork1 test_ftplib test_gdb
test_generated_cases test_grp test_httplib test_httpservers
test_idle test_imaplib test_interpreters test_ioctl test_kqueue
test_launcher test_lzma test_mmap test_multiprocessing_fork
test_multiprocessing_forkserver test_multiprocessing_main_handling
test_multiprocessing_spawn test_openpty test_pdb
test_perf_profiler test_perfmaps test_poll test_poplib test_pty
test_pwd test_readline test_regrtest test_repl test_resource
test_select test_selectors test_smtplib test_smtpnet test_socket
test_socketserver test_ssl test_stable_abi_ctypes test_startfile
test_subprocess test_sys_settrace test_syslog test_tcl
test_tkinter test_tools test_ttk test_ttk_textonly test_turtle
test_urllib2 test_urllib2_localnet test_urllib2net test_urllibnet
test_venv test_wait3 test_wait4 test_webbrowser test_winconsoleio
test_winreg test_winsound test_wmi test_wsgiref test_xmlrpc
test_xxlimited test_zipfile64 test_zipimport_support test_zoneinfo

Total duration: 27 min 16 sec

Click to see traceback logs

Traceback (most recent call last):
  File "/opt/buildbot/bcannon-wasm/3.x.bcannon-wasm.emscripten-node-pthreads/build/Lib/test/test_capi/test_watchers.py", line 534, in watcher
    raise MyError("testing 123")

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot aarch64 RHEL8 LTO 3.x has failed when building commit e90036c.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/338/builds/4814) and take a look at the build logs.
4. Check if the failure is related to this commit (e90036c) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/338/builds/4814

Summary of the results of the build (if available):

== Tests result: ENV CHANGED ==

432 tests OK.

10 slowest tests:

• test_gdb: 2 min 19 sec
• test_concurrent_futures: 2 min 17 sec
• test_multiprocessing_spawn: 1 min 40 sec
• test_signal: 1 min 14 sec
• test_multiprocessing_forkserver: 1 min 12 sec
• test_multiprocessing_fork: 1 min 5 sec
• test_socket: 39.6 sec
• test_io: 39.4 sec
• test_math: 33.3 sec
• test_imaplib: 32.2 sec

1 test altered the execution environment:
test_interpreters

14 tests skipped:
test.test_asyncio.test_windows_events
test.test_asyncio.test_windows_utils test_devpoll test_ioctl
test_kqueue test_launcher test_startfile test_tkinter test_ttk
test_winconsoleio test_winreg test_winsound test_wmi
test_zipfile64

Total duration: 2 min 34 sec

Click to see traceback logs

Traceback (most recent call last):
  File "<frozen importlib._bootstrap>", line 1266, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1237, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 841, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 999, in exec_module
  File "<frozen importlib._bootstrap_external>", line 1095, in get_code
  File "<frozen importlib._bootstrap_external>", line 1194, in get_data
TypeError: descriptor 'close' for '_io.BufferedReader' objects doesn't apply to a '_io.FileIO' object


Traceback (most recent call last):
  File "/home/buildbot/buildarea/3.x.cstratak-RHEL8-aarch64.lto/build/Lib/threading.py", line 1052, in _bootstrap_inner
    self.run()
  File "/home/buildbot/buildarea/3.x.cstratak-RHEL8-aarch64.lto/build/Lib/threading.py", line 989, in run
    self._target(*self._args, **self._kwargs)
  File "/home/buildbot/buildarea/3.x.cstratak-RHEL8-aarch64.lto/build/Lib/test/test_interpreters.py", line 481, in task
    interp = interpreters.create()
             ^^^^^^^^^^^^^^^^^^^^^
  File "/home/buildbot/buildarea/3.x.cstratak-RHEL8-aarch64.lto/build/Lib/test/support/interpreters.py", line 25, in create
    id = _interpreters.create(isolated=isolated)
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
RuntimeError: interpreter creation failed
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