FIX: Refine Topic Creation Hook to Allow Wizard Multi-Step Functionality

lib/custom_wizard/action.rb

@@ -63,6 +63,7 @@ class CustomWizard::Action
 
   def create_topic
     params = basic_topic_params.merge(public_topic_params)
+    params[:from_wizard] = true
 
     callbacks_for(:before_create_topic).each do |acb|
       params = acb.call(params, @wizard, @action, @submission)

plugin.rb

@@ -238,11 +238,13 @@ after_initialize do
   DiscourseEvent.trigger(:custom_wizard_ready)
 
   on(:before_create_topic) do |topic_params, user|
-    category = topic_params.category
+    next if topic_params[:archetype] == 'message'
-    if category&.custom_fields&.[]('create_topic_wizard').present?
+  
+    if topic_params[:category]&.custom_fields&.[]('create_topic_wizard').present? && !topic_params[:from_wizard]
       raise Discourse::InvalidParameters.new(
         I18n.t('wizard.error_messages.wizard_replacing_composer')
       )
     end
   end
+  
 end