* remove all user metadata on deletion
* chore: import order
* fix: Update JSDoc types for deleteMessages function parameters and return value
* fix: Enhance user deletion process by removing associated data and updating group memberships
* fix: Add missing config middleware to user deletion route
* fix: Refactor agent and prompt deletion processes to bulk delete and remove associated ACL entries
* fix: Add deletion of OAuth tokens and ACL entries in user deletion process
---------
Co-authored-by: Danny Avila <danny@librechat.ai>