gh-106320: Remove _PyUnicode_TransformDecimalAndSpaceToASCII()

[vstinner]

Remove private _PyUnicode_TransformDecimalAndSpaceToASCII() and other private _PyUnicode C API functions: move them to the internal C API (pycore_unicodeobject.h). No longer most of these functions.

Replace _testcapi.unicode_transformdecimalandspacetoascii() with _testinternal._PyUnicode_TransformDecimalAndSpaceToASCII().

• Issue: C API: Remove private C API functions (move them to the internal C API) #106320

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot wasm32-emscripten node (pthreads) 3.x has failed when building commit 8a73b57.

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/2440) and take a look at the build logs.
4. Check if the failure is related to this commit (8a73b57) 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/2440

Failed tests:

• test_unittest

Failed subtests:

• test_wait_until_any_call_keywords - test.test_unittest.testmock.testthreadingmock.TestThreadingMock.test_wait_until_any_call_keywords

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

== Tests result: FAILURE ==

329 tests OK.

10 slowest tests:

• test_math: 1 min 55 sec
• test_hashlib: 1 min 54 sec
• test_unparse: 58.5 sec
• test_tokenize: 49.8 sec
• test_tarfile: 40.2 sec
• test_capi: 37.5 sec
• test_fstring: 29.3 sec
• test_pathlib: 26.2 sec
• test_io: 25.3 sec
• test_unicodedata: 22.3 sec

1 test failed:
test_unittest

116 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_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
0:26:05 load avg: 7.80
0:26:05 load avg: 7.80 Re-running failed tests is not supported with --python host runner option.

Total duration: 26 min 5 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_unittest/testmock/testthreadingmock.py", line 188, in test_wait_until_any_call_keywords
    self.assertNotIn(call(a=1), something.method_1.mock_calls)
AssertionError: call(a=1) unexpectedly found in [call(a=1)]