Leverage parameterized translations capability

What does this MR do and why?

Integration branch for gitlab-ui!4241 (merged)

Now that GitLab UI properly supports parameterized/pluralized labels, we can leverage those new capabilities to provide a couple labels globally in the config.

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Screenshots or screen recordings

Here are a few examples of how the globally defined translations propagate to the frontend components.

User Preferences > Localization (GlCollapsibleListbox.srOnlyResultsLabel)

Project General Settings > Badges (GlPagination.labelPage)