ImageView2D_tests start getting flaky

[k-dominik]

Maybe good to keep track of observations.

• MacOs with Python 3.10 fails occasionally at tests/imageView2D_test.py::TestImageRendering::test_random_image_render_scaling[upper_left_10x]

  Test Output

  FAILED tests/imageView2D_test.py::TestImageRendering::test_random_image_render_scaling[upper_left_10x] - AssertionError: 
  Arrays are not equal
  
  Mismatched elements: 288 / 288 (100%)
  Max absolute difference among violations: 128
  Max relative difference among violations: 2.
   ACTUAL: array([[255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255],
         [255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255],
         [255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255],...
   DESIRED: array([[  0,   1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11],
         [  0,   1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11],
         [  0,   1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11],...