gh-118404: Fix inspect.signature() for non-comparable callables

[serhiy-storchaka]

• Issue: inspect.signature() raises TypeError for non-comparable callable #118404

[sobolevn]

Thank you!

[miss-islington-app]

Thanks @serhiy-storchaka for the PR 🌮🎉.. I'm working now to backport this PR to: 3.12.
🐍🍒⛏🤖

[bedevere-app]

GH-118424 is a backport of this pull request to the 3.12 branch.

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot iOS ARM64 Simulator 3.x has failed when building commit 11f8348.

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/1380/builds/122) and take a look at the build logs.
4. Check if the failure is related to this commit (11f8348) 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/1380/builds/122

Failed tests:

• test_posix

Failed subtests:

• test_confstr - test.test_posix.PosixTester.test_confstr

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

==

Click to see traceback logs

Traceback (most recent call last):
  File "/Users/buildbot/Library/Developer/XCTestDevices/1AA43A31-C8E1-4A87-A97A-388CEF86B5BA/data/Containers/Bundle/Application/39AF92F7-82C8-492C-A0C1-3F9D457FC980/iOSTestbed.app/python/lib/python3.13/test/test_posix.py", line 569, in test_confstr
    self.assertEqual(len(posix.confstr("CS_PATH")) > 0, True)
                         ~~~~~~~~~~~~~^^^^^^^^^^^
ValueError: unrecognized configuration name