refactor: update header navigation to dashboard, rename edit profile labels, and update professional search placeholder

src/app/(user)/user/profiles/page.tsx

@@ -687,7 +687,7 @@ function ProfilesPageContent() {
               <div className="relative">
                 <input
                   type="text"
-                  placeholder="Search Agents"
+                  placeholder="Search Professionals"
                   value={searchQuery}
                   onChange={(e) => setSearchQuery(e.target.value)}
                   onKeyDown={(e) => e.key === 'Enter' && handleSearch()}