SERVER-111158 split the large test file src/mongo/db/pipeline/document_source_change_stream_handle_topology_change_v2_test.cpp into several smaller files. This task is to continue splitting large change stream test files following a similar philosophy, namely:

• extract logical groups of test by behaviour or assertion types
• move common test code into a separate helper header and CPP files where necessary

One such example is src/mongo/db/pipeline/document_source_change_stream_test.cpp