Incorrect `undeclared inclusion(s)` on Windows

### Description of the bug:

I noticed this in OpenSSL in BCR and have some data for it here:
https://github.com/raccoons-build/bazel-openssl-cc/pull/45#issuecomment-3499772102

```
ERROR: C:/users/runneradmin/_bazel_runneradmin/hjc222nr/external/openssl+/test_bazel_build/BUILD.bazel:28:11: Compiling external/openssl+/test_bazel_build/includes_bh.cpp failed: undeclared inclusion(s) in rule '@@openssl+//test_bazel_build:includes_bn':
this rule is missing dependency declarations for the following files included by 'external/openssl+/test_bazel_build/includes_bh.cpp':
'external/openssl+/include/openssl/opensslconf.h'
```

Essentially we can see in a cquery that the header that Bazel claims is not a declared include is definitely directly passed to `hdrs` for the target.
```python
cc_library(
name = "crypto",
# ...
hdrs = [
# ...
"@openssl//:include/openssl/opensslconf.h",
# ...
],
# ...
)
```

I lack a Windows machine or sufficient context in the Java code to know what's going on here but this seems like a Bazel 9 bug as the targets work on Bazel 7 and Bazel 8.

### Which category does this issue belong to?

C++ Rules

### What's the simplest, easiest way to reproduce this bug? Please provide a minimal example if possible.

Use the following `MODULE.bazel`
```python
bazel_dep(name = "openssl", version = "3.3.1.bcr.9")
```

Run the following command
```powershell
bazel build @openssl
```

### Which operating system are you running Bazel on?

Windows

### What is the output of `bazel info release`?

release 9.0.0-pre.20251029.2

### If `bazel info release` returns `development version` or `(@non-git)`, tell us how you built Bazel.

_No response_

### What's the output of `git remote get-url origin; git rev-parse HEAD` ?

```text

```

### If this is a regression, please try to identify the Bazel commit where the bug was introduced with bazelisk --bisect.

_No response_

### Have you found anything relevant by searching the web?

_No response_

### Any other information, logs, or outputs that you want to share?

_No response_

Reproduce the failure on Windows using the provided MODULE.bazel and `bazel build @openssl` command, then compare the behavior with Bazel 7 and Bazel 8. Start from the C++ include-dependency checking path in the Java code and the reported `opensslconf.h` declaration; done means the declared header is no longer reported as an undeclared inclusion without regressing the supported Bazel versions.

Written by the indexing model from the issue text.