Rare hang (~1 in 3000) in grpc when using abseil sync primitives on Windows.

### Describe the issue

A more detailed issue is here https://github.com/grpc/grpc/issues/39321 and originally here where it was first noticed - https://github.com/open-telemetry/opentelemetry-cpp/issues/3372

### Steps to reproduce the problem

A repo with steps is here - https://github.com/malkia/grpc_absl_hang

### What version of Abseil are you using?

20240722.0 (found by `bazel dep graph`)

### What operating system and version are you using?

Windows 10, 11

### What compiler and version are you using?

Visual Studio Enterprise 2022, 10.0.26100.0 Windows SDK, and MSVC 14.43.34808, e.g.

```
C:/Program Files/Microsoft Visual Studio/2022/Enterprise/VC/Tools/MSVC/14.43.34808/bin/HostX64/x64/cl.exe
```

### What build system are you using?

bazel 8.2.1

### Additional context

_No response_