[opt](inverted index) Add troubleshooting logs (#44182)

Problem Summary:
1. Occasionally encounter 'No segments* file found' issue, need to add
troubleshooting logs.

be/src/olap/rowset/segment_v2/inverted_index_searcher.cpp

@@ -34,6 +34,9 @@ Status FulltextIndexSearcherBuilder::build(lucene::store::Directory* directory,
         reader = lucene::index::IndexReader::open(
                 directory, config::inverted_index_read_buffer_size, close_directory);
     } catch (const CLuceneError& e) {
+        std::vector<std::string> file_names;
+        directory->list(&file_names);
+        LOG(ERROR) << fmt::format("Directory list: {}", fmt::join(file_names, ", "));
         std::string msg = "FulltextIndexSearcherBuilder build error: " + std::string(e.what());
         if (e.number() == CL_ERR_EmptyIndexSegment) {
             return Status::Error<ErrorCode::INVERTED_INDEX_FILE_CORRUPTED>(msg);