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

frontend/src/IPRangesManager.jsx

@@ -29,7 +29,6 @@ import S3MetaBar from './components/S3MetaBar.jsx';
 import PageHeaderActions from './components/PageHeaderActions.jsx';
 import PageHeader from './components/PageHeader.jsx';
 import EmptyState from './components/EmptyState.jsx';
-import Breadcrumbs from './components/Breadcrumbs.jsx';
 import ConfirmDialog from './components/ConfirmDialog.jsx';
 import WsUpdateModal from './components/WsUpdateModal.jsx';
 import ConfirmDiffModal from './components/ConfirmDiffModal.jsx';
@@ -784,13 +783,6 @@ function IPRangesManager() {
 
       <PageHeader
         title="IP-диапазоны"
-        pretitle={(
-          <Breadcrumbs items={[
-            { label: 'Главная', to: '/dashboard' },
-            { label: 'Данные' },
-            { label: 'IP ranges' },
-          ]} />
-        )}
         actions={(
           <div className="d-flex align-items-center gap-2">
             <button