Draft: RuboCop: Configure "consistent" style for layout cops

What does this MR do and why?

This MR changes the configuration of several RuboCop rules to "consistent".

It puts all cop rules back to "grace period".

To highlight the 🆕 config changes this MR autocorrects:

• 30 files with most offenses
• Some GraphQL files
• Some database migrations

See gitlab-org/ruby/gems/gitlab-styles#42 (closed).

How to set up and validate locally

bundle exec rubocop --parallel

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

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