fix: change streaming mode to false in TestReadFilesSystemTableForDatePartition

The test creates a non-PK table with BUCKET=1. With is_streaming_mode=true,
this triggers bucketed append mode which requires a bucket-key. The test
does not need streaming mode — it only writes one record and verifies
files system table output for date partition.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: suxiaogang223

test/inte/read_inte_test.cpp

@@ -853,7 +853,7 @@ TEST(SystemTableReadInteTest, TestReadFilesSystemTableForDatePartition) {
     ASSERT_OK_AND_ASSIGN(auto helper,
                          TestHelper::Create(dir->Str(), schema, /*partition_keys=*/{"dt"},
                                             /*primary_keys=*/{}, options,
-                                            /*is_streaming_mode=*/true));
+                                            /*is_streaming_mode=*/false));
 
     ASSERT_OK_AND_ASSIGN(
         std::unique_ptr<RecordBatch> batch,