fix: Use page_title with fallback to name for portal display titles (#13719)

app/models/portal.rb

@@ -68,6 +68,10 @@ class Portal < ApplicationRecord
     self[:color].presence || DEFAULT_COLOR
   end
 
+  def display_title
+    page_title.presence || name
+  end
+
   private
 
   def config_json_format

app/views/layouts/portal.html.erb

@@ -34,7 +34,7 @@ By default, it renders:
     <% if content_for?(:head) %>
       <%= yield(:head) %>
     <% else %>
-      <title><%= @portal.page_title%></title>
+      <title><%= @portal.display_title %></title>
     <% end %>
     
     <% if @portal.logo.present? %>

app/views/public/api/v1/portals/_hero.html.erb

@@ -1,7 +1,7 @@
 <% if !@is_plain_layout_enabled %>
 <% content_for :head do %>
-  <title><%= @portal.name %></title>
-  <meta name="title" content="<%= @portal.name %>">
+  <title><%= @portal.display_title %></title>
+  <meta name="title" content="<%= @portal.display_title %>">
 
   <% if @og_image_url.present? %>
     <meta name="twitter:card" content="summary_large_image">

app/views/public/api/v1/portals/articles/show.html.erb

@@ -1,5 +1,5 @@
 <% content_for :head do %>
-  <title><%= @article.title %> | <%= @portal.name %></title>
+  <title><%= @article.title %> | <%= @portal.display_title %></title>
   <% if @article.meta["title"].present? %>
     <meta name="title" content="<%= @article.meta["title"] %>">
     <meta property="og:title" content="<%= @article.meta["title"] %>">

app/views/public/api/v1/portals/categories/show.html.erb

@@ -1,6 +1,6 @@
 <% content_for :head do %>
-  <title><%= @category.name %> | <%= @portal.name %></title>
-  <meta name="title" content="<%= @category.name %> | <%= @portal.name %>">
+  <title><%= @category.name %> | <%= @portal.display_title %></title>
+  <meta name="title" content="<%= @category.name %> | <%= @portal.display_title %>">
   <% if @category.description.present? %>
     <meta name="description" content="<%= @category.description %>">
     <meta property="og:description" content="<%= @category.description %>">