feat: add BlogBodySanitizer for HTML sanitization on article save

- Implemented BlogBodySanitizer to clean HTML content before saving articles, ensuring security against XSS attacks.
- Added tests for BlogBodySanitizer to verify that unsafe tags and attributes are stripped from the content.
- Introduced ApiLeastPrivilegeTest to ensure that unauthorized users cannot access sensitive API routes, maintaining strict access control.

assets/admin/pages/ReserveAppointmentsPage.tsx

@@ -2,7 +2,7 @@ import React, { useEffect, useRef, useState } from 'react';
 import { useUrlState } from '../hooks/useUrlState';
 import { useQuery } from '@tanstack/react-query';
 import ReactDOM from 'react-dom';
-import { useNavigate } from 'react-router-dom';
+import { useNavigate } from 'react-router';
 import {
   PlusIcon, EllipsisHorizontalIcon, EyeIcon, PencilIcon, ArrowDownOnSquareIcon,
   UserCircleIcon, PhoneIcon,