Pass embed/origin_url options to SSR rendering

External links in embed mode now correctly render with target="_top"
in server-side rendered content, matching client-side behavior.

REDMINE-21194

Author: tf

entry_types/scrolled/app/helpers/pageflow_scrolled/react_server_side_rendering_helper.rb

@@ -4,9 +4,9 @@ module ReactServerSideRenderingHelper
     include Pageflow::RenderJsonHelper
     include PageflowScrolled::EntryJsonSeedHelper
 
-    def render_scrolled_entry(entry)
+    def render_scrolled_entry(entry, options = {})
       seed_json = render_json do |json|
-        scrolled_entry_json_seed(json, entry)
+        scrolled_entry_json_seed(json, entry, options)
       end
 
       ReactServerSideRenderingHelper.renderer.render('Root', "{seed: #{seed_json}}", {})

entry_types/scrolled/app/views/pageflow_scrolled/entries/show.html.erb

@@ -35,7 +35,7 @@
         </script>
       <% end %>
 
-      <% ssr_html = local_assigns[:skip_ssr] ? '' : render_scrolled_entry(entry) %>
+      <% ssr_html = local_assigns[:skip_ssr] ? '' : render_scrolled_entry(entry, local_assigns[:seed_options] || {}) %>
 
       <% if !local_assigns[:skip_ssr] && (params[:frontend] == 'v2' || entry.feature_state('frontend_v2')) %>
         <%= generated_media_queries_tags_for(ssr_html) %>

entry_types/scrolled/spec/controllers/pageflow_scrolled/entries_controller_spec.rb

@@ -37,6 +37,31 @@ module PageflowScrolled
         expect(response.body).to have_selector('figcaption', text: 'Some caption')
       end
 
+      it 'server side renders external links with target top in embed mode' do
+        entry = create(:entry, :published, type_name: 'scrolled')
+        chapter = create(:scrolled_chapter, revision: entry.published_revision)
+        section = create(:section, chapter:)
+        create(:content_element,
+               section:,
+               type_name: 'textBlock',
+               configuration: {
+                 value: [{
+                   type: 'paragraph',
+                   children: [
+                     {
+                       type: 'link',
+                       href: 'https://example.com',
+                       children: [{text: 'External link'}]
+                     }
+                   ]
+                 }]
+               })
+
+        get_with_entry_env(:show, entry:, embed: true)
+
+        expect(response.body).to have_selector('a[href="https://example.com"][target="_top"]')
+      end
+
       it 'renders generated media queries if frontend v2' do
         entry = create(:entry, :published, type_name: 'scrolled')