test(generators): escape chat ui broadcast literals

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

Author: Gujiassh

spec/ruby_llm/generators/chat_ui_generator_spec.rb

@@ -134,13 +134,13 @@
         expect(message_content).to include('acts_as_message')
 
         # Check broadcasting setup
-        expect(message_content).to include(%q(broadcasts_to ->(message) { "chat_#{message.chat_id}" }))
+        expect(message_content).to include('broadcasts_to ->(message) { "chat_\#{message.chat_id}" }')
         expect(message_content).to include('inserts_by: :append')
 
         # Check broadcast_append_chunk method
         expect(message_content).to include('def broadcast_append_chunk(content)')
-        expect(message_content).to include(%q(broadcast_append_to "chat_#{chat_id}"))
-        expect(message_content).to include(%q(target: "message_#{id}_content"))
+        expect(message_content).to include('broadcast_append_to "chat_\#{chat_id}"')
+        expect(message_content).to include('target: "message_\#{id}_content"')
         expect(message_content).to include('content: ERB::Util.html_escape(content.to_s)')
       end
     end
@@ -318,13 +318,13 @@
         expect(message_content).to include("model: :llm_model, model_class: 'Llm::Model'")
 
         # Check broadcasting setup
-        expect(message_content).to include(%q(broadcasts_to ->(llm_message) { "llm_chat_#{llm_message.llm_chat_id}" }))
+        expect(message_content).to include('broadcasts_to ->(llm_message) { "llm_chat_\#{llm_message.llm_chat_id}" }')
         expect(message_content).to include('inserts_by: :append')
 
         # Check broadcast_append_chunk method
         expect(message_content).to include('def broadcast_append_chunk(content)')
-        expect(message_content).to include(%q(broadcast_append_to "llm_chat_#{llm_chat_id}"))
-        expect(message_content).to include(%q(target: "llm_message_#{id}_content"))
+        expect(message_content).to include('broadcast_append_to "llm_chat_\#{llm_chat_id}"')
+        expect(message_content).to include('target: "llm_message_\#{id}_content"')
         expect(message_content).to include('content: ERB::Util.html_escape(content.to_s)')
       end
     end