Fix randomly failing multi-animal test script #2233
Merged
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As data are randomly created in the test script, the TrackletStitcher will occasionally fail to reconstruct 3 tracks. The ValueError is now caught, and a fake data file is written to disk to prevent the test from prematurely exiting.
(Note that the TrackletStitcher is thoroughly tested in https://github.com/DeepLabCut/DeepLabCut/blob/main/tests/test_stitcher.py)