Adds a new setting that allows users to set a temporary system prompt for the current chat.
This prompt will override the selected system prompt if it exists.
The new setting is available in the "Current Chat Model Settings" modal.
This feature provides a way to quickly experiment with different system prompts without having to change the default setting.
Adds a collapsible section to the playground message that displays citations for the response. This is intended to help users better understand the sources used by the model.
