refactor(Managers): remove Breadcrumbs component from various managers for cleaner UI and improved readability

frontend/src/ServerManager.jsx

@@ -594,12 +594,6 @@ function ServerManager() {
               <IconServer className="me-2" />
               Управление серверами
             </h2>
-            <div className="page-pretitle">
-              {filteredServers.length} из {servers.length} серверов
-              {selectedServers.size > 0 && (
-                <span className="ms-2 text-primary">• {selectedServers.size} выбрано</span>
-              )}
-            </div>
           </div>
           <div className="col-auto ms-auto d-print-none">
             <div className="btn-list">