Faster gettext extractor in JiHu

Related upstream issue https://gitlab.com/gitlab-org/gitlab/-/merge_requests/115366

Related fix MR !1527 (merged)

Upstream has removed the overrides from config/initializers/gettext_rails_i18n_patch.rb, which is copied to JH as temporary solution.

• We need to check whether we can remove the temporary fix, to reuse the changes from upstream.