Merge pull request #25463 from WanliZhong:ocvface2YuNet

Change opencv_face_detector related tests and samples from caffe to onnx #25463

Part of https://github.com/opencv/opencv/issues/25314

This PR aims to change the tests related to opencv_face_detector from caffe framework to onnx. Tests in `test_int8_layer.cpp` and `test_caffe_importer.cpp` will be removed in https://github.com/opencv/opencv/pull/25323

### 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
- [ ] There is a reference to the original bug report and related work
- [ ] 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/dnn/test/test_misc.cpp

@@ -247,9 +247,6 @@ TEST(readNet, Regression)
     Net net = readNet(findDataFile("dnn/squeezenet_v1.1.prototxt"),
                       findDataFile("dnn/squeezenet_v1.1.caffemodel", false));
     EXPECT_FALSE(net.empty());
-    net = readNet(findDataFile("dnn/opencv_face_detector.caffemodel", false),
-                  findDataFile("dnn/opencv_face_detector.prototxt"));
-    EXPECT_FALSE(net.empty());
     net = readNet(findDataFile("dnn/tiny-yolo-voc.cfg"),
                   findDataFile("dnn/tiny-yolo-voc.weights", false));
     EXPECT_FALSE(net.empty());