Merge pull request #1151 from Altinity/backports/antalya-25.8/90209

Antalya 25.8 Backport of ClickHouse#90209 - Fix JSON Exception in iceberg table with timestamp column when using glue catalog

Author: Enmk

src/Databases/DataLake/GlueCatalog.cpp

@@ -485,7 +485,7 @@ bool GlueCatalog::classifyTimestampTZ(const String & column_name, const TableMet
         DB::StoredObject metadata_stored_object(metadata_path);
         auto read_buf = object_storage->readObject(metadata_stored_object, read_settings);
         String metadata_file;
-        readString(metadata_file, *read_buf);
+        readStringUntilEOF(metadata_file, *read_buf);
 
         Poco::JSON::Parser parser;
         Poco::Dynamic::Var result = parser.parse(metadata_file);