fix(CodeBlock): fix styles of lang select in codeblock tooltip

Author: d3m1d0v

packages/editor/src/extensions/markdown/CodeBlock/CodeBlockHighlight/TooltipPlugin/CodeLangSelect.tsx

@@ -1,8 +1,8 @@
 import {memo} from 'react';
 
-import {cn} from '@bem-react/classname';
 import {Select, type SelectOption} from '@gravity-ui/uikit';
 
+import {cn} from 'src/classname';
 import {i18n} from 'src/i18n/codeblock';
 import {i18n as i18nPlaceholder} from 'src/i18n/placeholder';