Merge pull request #27559 from Kumataro:fix27555

imgcodecs: bmp: support to write 32bpp BMP with BI_BITFIELDS #27559

### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
- [x] There is a reference to the original bug report and related work
- [x] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
- [ ] The feature is well documented and sample code can be built with the project CMake

modules/imgcodecs/test/test_precomp.hpp

@@ -80,6 +80,23 @@ void PrintTo(const ImreadModes& val, std::ostream* os)
     *os << "IMREAD_UNKNOWN(" << (int)v << ")";
 }
 
+static inline
+void PrintTo(const ImwriteBMPCompressionFlags& val, std::ostream* os)
+{
+    switch(val)
+    {
+        case IMWRITE_BMP_COMPRESSION_RGB:
+            *os << "IMWRITE_BMP_COMPRESSION_RGB";
+            break;
+        case IMWRITE_BMP_COMPRESSION_BITFIELDS:
+            *os << "IMWRITE_BMP_COMPRESSION_BITFIELDS";
+            break;
+        default:
+            *os << "IMWRITE_BMP_COMPRESSION_UNKNOWN(" << (int)val << ")";
+            break;
+    }
+}
+
 } // namespace
 
 #endif