[py] PEP 484 type hints for selenium.webdriver.remote.file_detector (#9606)
[py] PEP 484 type hints for selenium.webdriver.remote.file_detector (#9606)

Signed-off-by: oleg.hoefling <5372a8938f37931bff856e791e71bfdb147a99f0@gmail.com>

Co-authored-by: David Burns <d362af86e495513f26934099bd8e8ac6f8be9d8e@theautomatedtester.co.uk>
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