[fix](arrow-flight-sql) Fix Doris NULL column conversion to arrow bat…

…ch (apache#43929)

### What problem does this PR solve?

Problem Summary:

The representation of NULL columns in Doris is special, which is
`DataTypeNull<DataTypeNumber::Uint8>`. `Uint8` uses
`arrow::BooleanBuilder` when serializing into arrow batch, which does
not match the expected `arrow::NullBuilder`.

Fix:

```
*** Query id: fd32741526804c1e-bc016473fd8f3aa3 ***
*** is nereids: 1 ***
*** tablet id: 0 ***
*** Aborted at 1731327262 (unix time) try "date -d @1731327262" if you are using GNU date ***
*** Current BE git commitID: 653e315 ***
*** SIGSEGV address not mapped to object (@0x100000024) received by PID 1442863 (TID 1443456 OR 0x7f8b8cdea700) from PID 36; stack trace: ***
 0# doris::signal::(anonymous namespace)::FailureSignalHandler(int, siginfo_t*, void*) at /mnt/disk2/liyifan/doris/doris_2.1/doris/be/src/common/signal_handler.h:421
 1# PosixSignals::chained_handler(int, siginfo*, void*) [clone .part.0] in /mnt/disk2/liyifan/doris/jdk-17.0.2/lib/server/libjvm.so
 2# JVM_handle_linux_signal in /mnt/disk2/liyifan/doris/jdk-17.0.2/lib/server/libjvm.so
 3# 0x00007F8CA1F38B50 in /lib64/libc.so.6
 4# 0x000055FC45E5B2D3 in /mnt/disk2/liyifan/doris/doris_2.1/doris/output_run/be/lib/doris_be
 5# arrow::BooleanBuilder::AppendValues(unsigned char const*, long, unsigned char const*) in /mnt/disk2/liyifan/doris/doris_2.1/doris/output_run/be/lib/doris_be
 6# doris::vectorized::DataTypeNumberSerDe<unsigned char>::write_column_to_arrow(doris::vectorized::IColumn const&, doris::vectorized::PODArray<unsigned char, 4096ul, Allocator<false, false, false, DefaultMemoryAllocator>, 15ul, 16ul> const*, arrow::ArrayBuilder*, int, int, cctz::time_zone const&) const at /mnt/disk2/liyifan/doris/doris_2.1/doris/be/src/vec/data_types/serde/data_type_number_serde.cpp:86
 7# doris::FromBlockConverter::convert(std::shared_ptr<arrow::RecordBatch>*) at /mnt/disk2/liyifan/doris/doris_2.1/doris/be/src/util/arrow/block_convertor.cpp:390
 8# doris::convert_to_arrow_batch(doris::vectorized::Block const&, std::shared_ptr<arrow::Schema> const&, arrow::MemoryPool*, std::shared_ptr<arrow::RecordBatch>*, cctz::time_zone const&) in /mnt/disk2/liyifan/doris/doris_2.1/doris/output_run/be/lib/doris_be
 9# doris::vectorized::VArrowFlightResultWriter::write(doris::vectorized::Block&) at /mnt/disk2/liyifan/doris/doris_2.1/doris/be/src/vec/sink/varrow_flight_result_writer.cpp:76
10# doris::vectorized::VResultSink::send(doris::RuntimeState*, doris::vectorized::Block*, bool) at /mnt/disk2/liyifan/doris/doris_2.1/doris/be/src/vec/sink/vresult_sink.cpp:149
11# doris::PlanFragmentExecutor::open_vectorized_internal() at /mnt/disk2/liyifan/doris/doris_2.1/doris/be/src/runtime/plan_fragment_executor.cpp:341
12# doris::PlanFragmentExecutor::open() at /mnt/disk2/liyifan/doris/doris_2.1/doris/be/src/runtime/plan_fragment_executor.cpp:273
```

be/src/vec/data_types/serde/data_type_number_serde.cpp

@@ -78,12 +78,21 @@ void DataTypeNumberSerDe<T>::write_column_to_arrow(const IColumn& column, const
     auto arrow_null_map = revert_null_map(null_map, start, end);
     auto arrow_null_map_data = arrow_null_map.empty() ? nullptr : arrow_null_map.data();
     if constexpr (std::is_same_v<T, UInt8>) {
-        ARROW_BUILDER_TYPE& builder = assert_cast<ARROW_BUILDER_TYPE&>(*array_builder);
-        checkArrowStatus(
-                builder.AppendValues(reinterpret_cast<const uint8_t*>(col_data.data() + start),
-                                     end - start,
-                                     reinterpret_cast<const uint8_t*>(arrow_null_map_data)),
-                column.get_name(), array_builder->type()->name());
+        auto* null_builder = dynamic_cast<arrow::NullBuilder*>(array_builder);
+        if (null_builder) {
+            for (size_t i = start; i < end; ++i) {
+                checkArrowStatus(null_builder->AppendNull(), column.get_name(),
+                                 null_builder->type()->name());
+            }
+        } else {
+            ARROW_BUILDER_TYPE& builder = assert_cast<ARROW_BUILDER_TYPE&>(*array_builder);
+            checkArrowStatus(
+                    builder.AppendValues(reinterpret_cast<const uint8_t*>(col_data.data() + start),
+                                         end - start,
+                                         reinterpret_cast<const uint8_t*>(arrow_null_map_data)),
+                    column.get_name(), array_builder->type()->name());
+        }
+
     } else if constexpr (std::is_same_v<T, Int128>) {
         auto& string_builder = assert_cast<arrow::StringBuilder&>(*array_builder);
         for (size_t i = start; i < end; ++i) {