slightly alter threshold for warpAffine optimization #3787
Merge with https://github.com/opencv/opencv/pull/25984
New`onfusionMatrixes[1]` is
```
[[45 0 0 0 0 0 0 0 0 0]
[ 0 57 0 0 0 0 0 0 0 0]
[ 0 0 58 2 0 0 0 0 1 0]
[ 0 0 0 43 0 0 0 1 0 0]
[ 0 0 0 0 39 0 0 0 0 1]
[ 0 0 0 1 0 49 0 0 1 0]
[ 0 0 0 0 0 0 52 0 0 0]
[ 0 0 1 0 0 0 0 54 0 0]
[ 0 0 0 0 0 0 0 0 47 0]
[ 0 1 0 1 0 0 0 0 2 44]]
```
which is about of pixel value 1 shift in each 4x or 5x pixel value.
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