Silence deprecation warnings via `config.active_support.report_deprecations = false` in Rails 7

With Rails 7, instead of an early return in !92557 (diffs) we can use config.active_support.report_deprecations = false for production environment to efficiently silence deprecation warnings.

When GITLAB_LOG_DEPRECATIONS=1 is set we should skip config.active_support.report_deprecations = false. See https://gitlab.com/gitlab-org/gitlab/-/blob/master/config/initializers/0_log_deprecations.rb.

Refs

• https://github.com/rails/rails/pull/42913
• !92557 (merged)