Fix TPC-DS integration tests: handle NULLs in ORDER BY validation

[Avinash-Raj]

Summary

• Fixes 17 TPC-DS integration tests that started failing in presto-nightly #122 with TypeError: '<' not supported between instances of 'str' and 'float' (and float and str, and NoneType and NoneType) — see "Root cause" below.
• Adds 6 new regression tests covering the failure shapes.
• Also un-breaks 2 preexisting unit tests in the same file that no longer worked under pandas 3.x (the version pinned in
  presto/testing/requirements.txt and spark_gluten/testing/requirements.txt).

After this PR pytest common/testing/result_comparison_test.py is 22/22 green (was 15/17 before this branch, ignoring the new tests).

Failing job

presto-nightly run 26017210785, job 76471406344
— pinned / presto-test / integration-test (tpcds, presto-gpu-cuda13.1, amd64, l4).

Stack trace, identical for all 17 failures:

(130 durations < 0.005s hidden.  Use -vv to show these durations.)
=========================== short test summary info ============================
FAILED ../testing/integration_tests/tpcds_test.py::test_query[Q5] - TypeError: '<' not supported between instances of 'str' and 'float'
FAILED ../testing/integration_tests/tpcds_test.py::test_query[Q15] - TypeError: '<' not supported between instances of 'str' and 'float'
FAILED ../testing/integration_tests/tpcds_test.py::test_query[Q20] - TypeError: '<' not supported between instances of 'str' and 'float'
FAILED ../testing/integration_tests/tpcds_test.py::test_query[Q23] - TypeError: '<' not supported between instances of 'str' and 'float'
FAILED ../testing/integration_tests/tpcds_test.py::test_query[Q30] - TypeError: '<' not supported between instances of 'float' and 'str'
FAILED ../testing/integration_tests/tpcds_test.py::test_query[Q45] - TypeError: '<' not supported between instances of 'float' and 'str'
FAILED ../testing/integration_tests/tpcds_test.py::test_query[Q46] - TypeError: '<' not supported between instances of 'NoneType' and 'NoneType'
FAILED ../testing/integration_tests/tpcds_test.py::test_query[Q50] - TypeError: '<' not supported between instances of 'float' and 'str'
FAILED ../testing/integration_tests/tpcds_test.py::test_query[Q62] - TypeError: '<' not supported between instances of 'str' and 'float'
FAILED ../testing/integration_tests/tpcds_test.py::test_query[Q65] - TypeError: '<' not supported between instances of 'str' and 'float'
FAILED ../testing/integration_tests/tpcds_test.py::test_query[Q66] - TypeError: '<' not supported between instances of 'str' and 'float'
FAILED ../testing/integration_tests/tpcds_test.py::test_query[Q68] - TypeError: '<' not supported between instances of 'NoneType' and 'NoneType'
FAILED ../testing/integration_tests/tpcds_test.py::test_query[Q77] - TypeError: '<' not supported between instances of 'str' and 'float'
FAILED ../testing/integration_tests/tpcds_test.py::test_query[Q80] - TypeError: '<' not supported between instances of 'str' and 'float'
FAILED ../testing/integration_tests/tpcds_test.py::test_query[Q81] - TypeError: '<' not supported between instances of 'float' and 'str'
FAILED ../testing/integration_tests/tpcds_test.py::test_query[Q98] - TypeError: '<' not supported between instances of 'str' and 'float'
FAILED ../testing/integration_tests/tpcds_test.py::test_query[Q99] - TypeError: '<' not supported between instances of 'str' and 'float'
============ 17 failed, 49 passed, 16 warnings in 243.74s (0:04:03) ============