text: Title: ChatInterface strips unused tags on display
  Body: ### Describe the bug
  
  put
  
  ```
  test
  <test>
  test
  ```
  
  Into
  
  ```python
  import gradio as gr
  
  def fn(a, b):
      print(a)
      return a
  with gr.Blocks() as demo:
      gr.ChatInterface(fn)
  demo.launch()
  ```
  
  The displayed text only shows `test` and not the subsequent two lines
  
  ### Have you searched existing issues?  🔎
  
  - [x] I have searched and found no existing issues
  
  ### Severity
  
  I can work around it