AIIntegration: Fix import from commands folder

Co-authored-by: marker dao ® <[email protected]>

Author: marker-dao

packages/devextreme/js/__internal/core/ai_integration/core/ai_integration.ts

@@ -29,7 +29,7 @@ import {
   ShortenCommand,
   SummarizeCommand,
   TranslateCommand,
-} from '@ts/core/ai_integration/commands';
+} from '@ts/core/ai_integration/commands/index';
 import { PromptManager } from '@ts/core/ai_integration/core/prompt_manager';
 import { RequestManager } from '@ts/core/ai_integration/core/request_manager';