fix: make concurrent declarative source test order-agnostic

The test_read_concurrent_declarative_source test was failing on Python 3.13
due to race conditions in concurrent processing that caused records to be
returned in different orders. This change replaces the strict list equality
assertion with a sorted comparison that validates the same records are
present without caring about their order.

Fixes the flaky test failure:
test_no_pagination_with_partition_router-manifest4-pages4-expected_records4-expected_calls4

Co-Authored-By: AJ Steers <[email protected]>

Author: devin-ai-integration[bot]

unit_tests/sources/declarative/test_concurrent_declarative_source.py

@@ -3885,7 +3885,7 @@ def test_read_concurrent_declarative_source(
         output_data = [
             message.record.data for message in _run_read(manifest, _stream_name) if message.record
         ]
-        assert output_data == expected_records
+        assert sorted(output_data, key=lambda x: (x.get("partition", 0), x.get("ABC", 0), x.get("AED", 0))) == sorted(expected_records, key=lambda x: (x.get("partition", 0), x.get("ABC", 0), x.get("AED", 0)))
         mock_retriever.assert_has_calls(expected_calls)