3 Test Failures with MinGW Static GCC Configuration (HDF5_MINGW_STATIC_GCC_LIBS=ON)

## Description

Three tests are failing when building HDF5 with the MinGW Static GCC configuration on Windows. The failures were detected in CDash build ID 3178953.

**CDash Build Report:** https://my.cdash.org/viewTest.php?onlyfailed&buildid=3178953

## Failed Tests

1. **H5TESTXPR-cache_api** - Execution time: 40ms
2. **H5TEST-dt_arith** - Execution time: 250ms
3. **H5TEST-err_compat** - Execution time: 40ms

## Build Configuration

The failures occurred with the following CMake configuration:

```cmake
cmake -G Ninja \
-DCMAKE_BUILD_TYPE=Release \
-DHDF5_MINGW_STATIC_GCC_LIBS:BOOL=ON \
-DBUILD_SHARED_LIBS:BOOL=ON \
-DHDF5_BUILD_CPP_LIB:BOOL=ON \
-DHDF5_BUILD_FORTRAN:BOOL=OFF \
-DHDF5_BUILD_JAVA:BOOL=OFF \
-DHDF5_BUILD_HL_LIB:BOOL=ON \
-DHDF5_ENABLE_ZLIB_SUPPORT:BOOL=OFF \
-DHDF5_ENABLE_SZIP_SUPPORT:BOOL=OFF
```

## Environment

- **Platform:** Windows Server 2022 (Build 26100)
- **Architecture:** AMD64
- **Compiler:** MinGW-w64 GCC (D:/a/_temp/msys64/mingw64/bin/c++.exe)
- **Build System:** Ninja
- **MSYS2 System:** MINGW64
- **Build Name:** mw/cpp
- **Site:** win-22
- **Test Time:** 2025-11-04 19:29:49 UTC

## Workflow

This configuration is tested via the GitHub Actions workflow: `win_mgw_sta.yml`

The key configuration flag being tested is:
- `HDF5_MINGW_STATIC_GCC_LIBS:BOOL=ON` - This enables static linking of GCC runtime libraries on MinGW

## Additional Information

All three tests completed execution but failed their validation checks. The total test execution time was approximately 5 minutes 42 seconds for the entire test suite.

## Expected Behavior

All tests should pass with the MinGW Static GCC configuration, as this is a supported build configuration for HDF5 on Windows.

## Reproduction

The issue can be reproduced by:
1. Setting up MSYS2 with MINGW64 environment
2. Installing mingw-w64-x86_64-gcc, mingw-w64-x86_64-cmake, mingw-w64-x86_64-ninja
3. Configuring HDF5 with the CMake flags listed above
4. Running `ctest -D Experimental`