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_avif.cpp

@@ -128,12 +128,6 @@ TEST_P(Imgcodecs_Avif_Image_WriteReadSuite, imwrite_imread) {
 
   // Encode.
   const string output = cv::tempfile(".avif");
-  if (!IsBitDepthValid()) {
-    EXPECT_NO_FATAL_FAILURE(
-        cv::imwrite(output, img_original, encoding_params_));
-    EXPECT_NE(0, remove(output.c_str()));
-    return;
-  }
   EXPECT_NO_THROW(cv::imwrite(output, img_original, encoding_params_));
 
   // Read from file.
@@ -164,11 +158,6 @@ TEST_P(Imgcodecs_Avif_Image_EncodeDecodeSuite, imencode_imdecode) {
   bool result = true;
   EXPECT_NO_THROW(
       result = cv::imencode(".avif", img_original, buf, encoding_params_););
-
-  if (!IsBitDepthValid()) {
-    EXPECT_FALSE(result);
-    return;
-  }
   EXPECT_TRUE(result);
 
   // Read back.