This makes two major changes:
Split `AdmWikipedia` into `AmpSuggestions` and `OfflineWikipediaSuggestions`. I
included "offline" in the name because Merino also serves Wikipedia suggestions,
but they're the so-called "dynamic Wikipedia" suggestions served from
Elasticsearch, and they have never been managed by a
`BaseFeature`/`SuggestFeature` in Firefox.
Send the `quick-suggest` ping only for AMP suggestions, in `AmpSuggestions`.
Stop sending it for offline Wikipedia suggestions. @bholley and I discussed this
on the data-review@mozilla.com list after I emailed it for the senstive data
review in D233752 [1]. We only use the ping for AMP suggestions, and Wikipedia
telemetry should follow the usual data opt-out. @nanj agreed the ping isn't
necessary for Wikipedia.
[1] https://groups.google.com/a/mozilla.com/g/data-review/c/BC2JKaXA7nA
Depends on D234440
Differential Revision: https://phabricator.services.mozilla.com/D234449
5f4b628014