Exclude empty seed files from RuboCop Lint/EmptyFile rule permanently

What does this MR do and why?

This MR excludes empty seed files for the 👮 rule Lint/EmptyFile.

Related to #354328 (closed)

Screenshots or screen recordings

n/a

How to set up and validate locally

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MR acceptance checklist

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• I have evaluated the MR acceptance checklist for this MR.