* chore: Improve logging format for initial flow state creation
* refactor: MCP Tool Management with Improved Auth Handling and State Management
- Updated `CustomUserVarsSection` to include optional localization for placeholder text.
- Refactored `MCPToolSelectDialog` to streamline tool addition and management, including improved handling of authentication data.
- Introduced a new `addToolsToForm` function to encapsulate logic for adding tools to the form state.
- Enhanced `useRemoveMCPTool` hook to simplify tool removal logic and ensure proper state updates.
- Added loading state management for custom variable saving to improve user experience.
* refactor: Enhance MCP Tool Removal Logic and Integrate Toast Notifications
- Updated `MCPToolSelectDialog` to utilize the new `removeTool` function from the `useRemoveMCPTool` hook for improved tool removal handling.
- Refactored `useRemoveMCPTool` to accept options for toast notifications, allowing for more flexible user feedback during tool removal.
- Removed the previous inline tool removal logic to streamline the component's code and improve maintainability.
* refactor: Enhance user plugins mutation to invalidate MCP auth values on uninstall
* refactor: Replace refetchQueries with invalidateQueries for improved cache management
* chore: remove unused i18n key