Description of problem:

Improve the chatbot experience

Prerequisites (if any, like setup, operators/versions):

Steps to Reproduce

 # <steps>

Acceptance Criteria:

1. Update the prompt message to be "Enter a prompt for Lightspeed" Figma
   2. When renaming the conversation, load the input box with the current conversation name
   3. Remove the "Learn More" link from the button 'cause it goes nowhere. Remove "Verify accuracy" 
   4. Reduce the pinned icon size to be a bit smaller, so the pinned chats are aligned with the recent chats
   5. Move the tool calling to the top, it should appear after the Show Thinking component
   6.  Sanitise the tool calling response inside the component to remove the backticks
   6. Persist the display mode preference

Reproducibility (Always/Intermittent/Only Once):

Build Details:

Additional info (Such as Logs, Screenshots, etc):