Redesign public hashtag page to use a masonry layout (#9822)

app/controllers/tags_controller.rb

app/javascript/mastodon/components/display_name.js

app/javascript/mastodon/components/status.js

...pt/mastodon/features/standalone/hashtag_timeline/index.js

...pt/mastodon/features/status/components/detailed_status.js

...n/features/status/containers/detailed_status_container.js

app/javascript/styles/mastodon/widgets.scss

app/views/tags/show.html.haml

package.json

spec/controllers/tags_controller_spec.rb

yarn.lock