gh-119070: Fix py.exe handling of /usr/bin/env commands missing extension

[zooba]

• Issue: Version numbers not supported for shebang line virtual command /usr/bin/env python on windows #119070

[miss-islington-app]

Thanks @zooba for the PR 🌮🎉.. I'm working now to backport this PR to: 3.12, 3.13.
🐍🍒⛏🤖

[miss-islington-app]

Sorry, @zooba, I could not cleanly backport this to 3.12 due to a conflict.
Please backport using cherry_picker on command line.

cherry_picker df93f5d4bf9d70036d485666d4dd4f009d37f8b9 3.12

[bedevere-app]

GH-119739 is a backport of this pull request to the 3.13 branch.

[bedevere-app]

GH-119741 is a backport of this pull request to the 3.12 branch.

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot AMD64 Windows10 3.12 has failed when building commit bc01c5d.

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/1159/builds/1004) and take a look at the build logs.
4. Check if the failure is related to this commit (bc01c5d) 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/1159/builds/1004

Failed tests:

• test_launcher

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

==

Click to see traceback logs

Traceback (most recent call last):
  File "D:\buildarea\3.12.bolen-windows10\build\Lib\test\libregrtest\single.py", line 181, in _runtest_env_changed_exc
    _load_run_test(result, runtests)
  File "D:\buildarea\3.12.bolen-windows10\build\Lib\test\libregrtest\single.py", line 138, in _load_run_test
    regrtest_runner(result, test_func, runtests)
  File "D:\buildarea\3.12.bolen-windows10\build\Lib\test\libregrtest\single.py", line 91, in regrtest_runner
    test_result = test_func()
                  ^^^^^^^^^^^
  File "D:\buildarea\3.12.bolen-windows10\build\Lib\test\libregrtest\single.py", line 135, in test_func
    return run_unittest(test_mod)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "D:\buildarea\3.12.bolen-windows10\build\Lib\test\libregrtest\single.py", line 37, in run_unittest
    return _run_suite(tests)
           ^^^^^^^^^^^^^^^^^
  File "D:\buildarea\3.12.bolen-windows10\build\Lib\test\libregrtest\single.py", line 57, in _run_suite
    result = runner.run(suite)
             ^^^^^^^^^^^^^^^^^
  File "D:\buildarea\3.12.bolen-windows10\build\Lib\unittest\runner.py", line 240, in run
    test(result)
  File "D:\buildarea\3.12.bolen-windows10\build\Lib\unittest\suite.py", line 84, in __call__
    return self.run(*args, **kwds)
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\buildarea\3.12.bolen-windows10\build\Lib\unittest\suite.py", line 122, in run
    test(result)
  File "D:\buildarea\3.12.bolen-windows10\build\Lib\unittest\suite.py", line 84, in __call__
    return self.run(*args, **kwds)
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\buildarea\3.12.bolen-windows10\build\Lib\unittest\suite.py", line 122, in run
    test(result)
  File "D:\buildarea\3.12.bolen-windows10\build\Lib\unittest\case.py", line 690, in __call__
    return self.run(*args, **kwds)
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\buildarea\3.12.bolen-windows10\build\Lib\unittest\case.py", line 660, in run
    result.stopTest(self)
  File "D:\buildarea\3.12.bolen-windows10\build\Lib\unittest\result.py", line 81, in stopTest
    self._restoreStdout()
  File "D:\buildarea\3.12.bolen-windows10\build\Lib\unittest\result.py", line 92, in _restoreStdout
    self._original_stdout.write(STDOUT_LINE % output)
  File "D:\buildarea\3.12.bolen-windows10\build\Lib\encodings\cp1252.py", line 19, in encode
    return codecs.charmap_encode(input,self.errors,encoding_table)[0]
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
UnicodeEncodeError: 'charmap' codec can't encode character '\ufffd' in position 406: character maps to <undefined>

[zooba]

#119747 should deal with the buildbot failure