Merge pull request #27621 from Kumataro:trial27557

Add strict validation for encoding parameters #27621

Close https://github.com/opencv/opencv/issues/27557

### 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.
- [x] The feature is well documented and sample code can be built with the project CMake

modules/imgcodecs/test/test_webp.cpp

@@ -72,7 +72,7 @@ TEST(Imgcodecs_WebP, encode_decode_lossy_webp)
     {
         std::vector<int> params;
         params.push_back(IMWRITE_WEBP_QUALITY);
-        params.push_back(q);
+        params.push_back(MAX(q,1));
         string output = cv::tempfile(".webp");
 
         EXPECT_NO_THROW(cv::imwrite(output, img, params));