sign_in and sign_up views present og meta infos (#5308)

app/views/about/_og.html.haml

@@ -1,10 +0,0 @@
-- thumbnail = @instance_presenter.thumbnail
-= opengraph 'og:site_name', t('about.hosted_on', domain: site_hostname)
-= opengraph 'og:url', about_url
-= opengraph 'og:type', 'website'
-= opengraph 'og:title', @instance_presenter.site_title
-= opengraph 'og:description', strip_tags(@instance_presenter.site_description.presence || t('about.about_mastodon_html'))
-= opengraph 'og:image', full_asset_url(thumbnail&.file&.url || asset_pack_path('preview.jpg', protocol: :request))
-= opengraph 'og:image:width', thumbnail ? thumbnail.meta['width'] : '1200'
-= opengraph 'og:image:height', thumbnail ? thumbnail.meta['height'] : '630'
-= opengraph 'twitter:card', 'summary_large_image'

app/views/about/more.html.haml

@@ -3,7 +3,7 @@
 
 - content_for :header_tags do
   = javascript_pack_tag 'public', integrity: true, crossorigin: 'anonymous'
-  = render partial: 'og'
+  = render partial: 'shared/og'
 
 .landing-page
   .header-wrapper.compact

app/views/about/show.html.haml

@@ -4,7 +4,7 @@
 - content_for :header_tags do
   %script#initial-state{ type: 'application/json' }!= json_escape(@initial_state_json)
   = javascript_pack_tag 'about', integrity: true, crossorigin: 'anonymous'
-  = render partial: 'og'
+  = render partial: 'shared/og'
 
 .landing-page
   .header-wrapper