* Add Default System Prompt Management
- Introduced a new route for fetching and updating the default system prompt in the backend.
- Added a new Admin page for managing the default system prompt, including a form for editing and saving changes.
- Updated the SettingsSidebar to include a link to the new Default System Prompt page.
- Implemented fetching of available system prompt variables for use in the prompt editor.
- Enhanced the ChatSettings and ChatPromptSettings components to support the new default system prompt functionality.
This commit lays the groundwork for improved management of system prompts across workspaces.
* Remove validation for system prompt in ChatSettings component
* Add comment for system prompt in workspaces model
* linting, simplify logic for default assumption
* dev build
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Co-authored-by: timothycarambat <rambat1010@gmail.com>
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