Repository: opencv
Issue: UMat has different return from Mat/GpuMat in matchTemplate 
Labels: category: imgproc,category: ocl,confirmed

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##### System information (version)
<!-- Example
- OpenCV => 4.2
- Operating System / Platform => Windows 64 Bit
- Compiler => Visual Studio 2017
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- OpenCV => 4.5.5-dev
- Operating System / Platform => windows10
- Compiler => pycharm

##### Detailed description

<!-- your description -->

UMat has different return from Mat/GpuMat in matchTemplate 

##### Steps to reproduce

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    ```.cpp
    // C++ code example
    ```
 or attach as .txt or .zip file
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```
import cv2

im1 = cv2.imread('tests/image/1.png')
im2 = cv2.imread('tests/image/1.png')[108:139, 1244:1276]

im1 = cv2.cvtColor(im1, cv2.COLOR_BGR2GRAY)
im2 = cv2.cvtColor(im2, cv2.COLOR_BGR2GRAY)


result = cv2.matchTemplate(im1, im2, cv2.TM_CCOEFF_NORMED)
print(cv2.minMaxLoc(result))
-> (-0.8367252945899963, 1.0, (1477, 1042), (1244, 108))

im1_umat = cv2.imread('tests/image/1.png')
im2_umat = cv2.imread('tests/image/1.png')[108:139, 1244:1276]

im1_umat = cv2.UMat(im1_umat)
im2_umat = cv2.UMat(im2_umat)

im1_umat = cv2.cvtColor(im1_umat, cv2.COLOR_BGR2GRAY)
im2_umat = cv2.cvtColor(im2_umat, cv2.COLOR_BGR2GRAY)

result_umat = cv2.matchTemplate(im1_umat, im2_umat, cv2.TM_CCOEFF_NORMED)
print(cv2.minMaxLoc(result_umat))
-> (-1.0, 1.0, (426, 67), (387, 37))
```

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