Windows: `pywin32` doesn't work with the hermetic Python toolchain

# 🐞 bug report

### Affected Rule

rules_python

### Is this a regression?

Probably not.

### Description

I'm trying to do `import win32api` on Windows, but got
```
ModuleNotFoundError: No module named 'win32api'
```
even if I specify `pywin32==303` in the requirements.txt file.

## 🔬 Minimal Reproduction

Fetch the reproducible case at https://github.com/meteorcloudy/my_tests/tree/master/pywin32_test

then run
```
bazel run //:bin
```

## 🔥 Exception or Error

$ bazel run //:bin

INFO: Invocation ID: 3c7000e6-65e3-4816-a2b5-551faa933a03

INFO: Reading 'startup' options from c:\users\pcloudy\.bazelrc: --output_user_root=C:/src/tmp

INFO: Options provided by the client:

  Inherited 'common' options: --isatty=1 --terminal_columns=375

INFO: Options provided by the client:

  Inherited 'build' options: --python_path=C:/python3/python.exe

INFO: Reading rc options for 'run' from c:\users\pcloudy\.bazelrc:

  Inherited 'build' options: --curses=yes --color=yes --verbose_failures --announce_rc --disk_cache=C:/src/tmp/bazel_disk_cache

INFO: Analyzed target //:bin (40 packages loaded, 3463 targets configured).

INFO: Found 1 target...

Target //:bin up-to-date:

  bazel-bin/bin.exe

  bazel-bin/bin.zip

INFO: Elapsed time: 15.868s, Critical Path: 7.96s

INFO: 6 processes: 5 internal, 1 local.

INFO: Build completed successfully, 6 total actions

INFO: Running command line: bazel-bin/bin.exe

Traceback (most recent call last):

  File "C:\temp\2\Bazel.runfiles_s_pq9z9_\runfiles\__main__\bin.py", line 1, in 

    import win32api

ModuleNotFoundError: No module named 'win32api'

## 🌍 Your Environment

**Operating System:**

  

Windows

  

**Output of `bazel version`:**

  

6.3.1

  

**Rules_python version:**

  

0.24.0

  

**Anything else relevant?**
If I do `import win32.win32api`, I get
```
ImportError: DLL load failed while importing win32api: The specified module could not be found.
```

Start with the linked pywin32_test reproduction, its requirements.txt, and the bazel run //:bin entry point; inspect how rules_python's hermetic toolchain handles pywin32 on Windows. Reproduce the missing win32api import and the DLL-load error, then verify that the sample runs successfully with pywin32==303.

Written by the indexing model from the issue text.