* Fix /api/v1/admin/trends/tags using wrong serializer
Fix regression from #18641
* Only use `REST::Admin::TagSerializer` when the user can `manage_taxonomies`
* Fix admin trending hashtag component to not link if `id` is unknown
After much discussion (#1214), I have decided that the solution we are
going with for timestamp-clicking is:
- clicking a post timestamp from most views takes you to the "focus" view for that post, identical to v3 behavior
- clicking the timestamp from the "focus" view opens the link to the canonical post on the server of origin, identical to v3 behavior
This is an application of this patch from the queer.party folks: https://commit.pup.cloud/maff/queer.party/src/branch/master/patches/4.0.0_4-revert-captive-links.patchFixes#1214
* Add trending links
* Add overriding specific links trendability
* Add link type to preview cards and only trend articles
Change trends review notifications from being sent every 5 minutes to being sent every 2 hours
Change threshold from 5 unique accounts to 15 unique accounts
* Fix tests