feat: Add granular role-based permissions system with Entra ID integration

- Implement RBAC with viewer/editor/owner roles using bitwise permissions
      - Add AccessRole, AclEntry, and Group models for permission management
      - Create PermissionService for core permission logic and validation
      - Integrate Microsoft Graph API for Entra ID user/group search
      - Add middleware for resource access validation with custom ID resolvers
      - Implement bulk permission updates with transaction support
      - Create permission management UI with people picker and role selection
      - Add public sharing capabilities for resources
      - Include database migration for existing agent ownership
      - Support hybrid local/Entra ID identity management
      - Add comprehensive test coverage for all new services

chore: Update @librechat/data-schemas to version 0.0.9 and export common module in index.ts

fix: Update userGroup tests to mock logger correctly and change principalId expectation from null to undefined

client/src/components/ui/Dropdown.tsx

@@ -97,7 +97,13 @@ const Dropdown: React.FC<DropdownProps> = ({
       <Select.SelectPopover
         portal={portal}
         store={selectProps}
-        className={cn('popover-ui', sizeClasses, className, 'max-h-[80vh] overflow-y-auto')}
+        className={cn(
+          'popover-ui',
+          sizeClasses,
+          className,
+          'max-h-[80vh] overflow-y-auto',
+          '[pointer-events:auto]', // Override body's pointer-events:none when in modal
+        )}
       >
         {options.map((item, index) => {
           if (isDivider(item)) {