Change layout of posts in web UI (#19423)

app/javascript/mastodon/components/account.js

app/javascript/mastodon/components/status.js

app/javascript/mastodon/components/status_action_bar.js

app/javascript/mastodon/components/status_content.js

...ipt/mastodon/features/account/components/featured_tags.js

...javascript/mastodon/features/account/components/header.js

...script/mastodon/features/compose/components/action_bar.js

...pt/mastodon/features/compose/components/navigation_bar.js

...ascript/mastodon/features/status/components/action_bar.js

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

...vascript/mastodon/features/ui/components/actions_modal.js

...javascript/mastodon/features/ui/components/boost_modal.js

app/javascript/styles/mastodon/components.scss