Fix screenshot-related unit tests. Due to some weirdness, PIL wouldn't load all the image loaders if we left initialization to happen during tests. We now import PIL.Image and call init() before beginning unit tests to ensure we get all the loaders.
Fix screenshot-related unit tests. Due to some weirdness, PIL wouldn't load all the image loaders if we left initialization to happen during tests. We now import PIL.Image and call init() before beginning unit tests to ensure we get all the loaders.




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