[py] Update test_remote_webdriver.py to use file_names #1568

[rdinoff]

files does not get returned in a consistent order from get_downloadable_files() which is why the sort is needed in the assert. Use file_names instead

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• Code example added (and I also added the example to all translated languages)
• Improved translation
• Added new translation (and I also added a notice to each document missing translation)

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[diemol]

Thank you, @rdinoff!