Redesign the preview on environment link in Rapid Diffs
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The following discussion from !211686 should be addressed:
- [ ] @slashmanov started a [discussion](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/211686#note_2872524069): (+6 comments)
> **suggestion**: @mle this is a question for you. WDYT of switching from `View on foo.baz.baz.com` to just `Preview`?
>
> ```suggestion:-3+0
> text: s_('RapidDiffs|Preview'),
> ```
issue