CV_DnnSuperResMultiOutputTest.accuracy test fails with the new dnn engine in 5.x

[asmorkalov]

[ RUN      ] CV_DnnSuperResMultiOutputTest.accuracy
unknown file: Failure
C++ exception with description "OpenCV(5.0.0-pre) /Users/opencv-cn/GHA-OCV-1/_work/opencv_contrib/opencv_contrib/opencv/modules/dnn/src/net_impl2.cpp:412: error: (-2:Unspecified error) in function 'void cv::dnn::dnn5_v20240521::Net::Impl::forwardWithMultipleOutputs(cv::OutputArrayOfArrays, const std::vector<std::string> &)'
> the number of requested and actual outputs must be the same (expected: '(int)outnames.size() == noutputs'), where
>     '(int)outnames.size()' is 2
> must be equal to
>     'noutputs' is 3
" thrown in the test body.
[  FAILED  ] CV_DnnSuperResMultiOutputTest.accuracy (10 ms)