Option to run `encryption:clean-orphaned-keys` on a set of users / one user

[hamza221]

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Is your feature request related to a problem? Please describe.
encryption:clean-orphaned-keys would scan all users' filesystem, which might be problematic on big instances

Describe the solution you'd like
add the option to limit running encryption:clean-orphaned-keys on one user or a specific set of users

Describe alternatives you've considered
Keep it as is

Additional context
#55556 (review)