FIX: "Replace Text" didn't list "Welcome Topic" when "General" category is missing (#27182)

Replacing the text of seeded topics doesn't require categories to exist, so this change removes that requirement for updates.

lib/seed_data/topics.rb

@@ -22,7 +22,10 @@ module SeedData
 
     def update(site_setting_names: nil, skip_changed: false)
       I18n.with_locale(@locale) do
-        topics(site_setting_names: site_setting_names).each do |params|
+        topics(
+          site_setting_names: site_setting_names,
+          require_existing_categories: false,
+        ).each do |params|
           update_topic(**params.except(:category, :after_create), skip_changed: skip_changed)
         end
       end
@@ -38,7 +41,7 @@ module SeedData
 
     def reseed_options
       I18n.with_locale(@locale) do
-        topics
+        topics(require_existing_categories: false)
           .map do |params|
             post = find_post(params[:site_setting_name])
             next unless post
@@ -51,7 +54,13 @@ module SeedData
 
     private
 
-    def topics(site_setting_names: nil, include_welcome_topics: true, include_legal_topics: true)
+    def topics(
+      site_setting_names: nil,
+      include_welcome_topics: true,
+      include_legal_topics: true,
+      require_existing_categories: true
+    )
+      general_category = Category.find_by(id: SiteSetting.general_category_id)
       staff_category = Category.find_by(id: SiteSetting.staff_category_id)
       feedback_category = Category.find_by(id: SiteSetting.meta_category_id)
       feedback_category_hashtag =
@@ -105,7 +114,7 @@ module SeedData
 
       if include_welcome_topics
         # Welcome Topic
-        if general_category = Category.find_by(id: SiteSetting.general_category_id)
+        if general_category || !require_existing_categories
           site_info_quote =
             if SiteSetting.title.present? && SiteSetting.site_description.present?
               <<~RAW