When vector_search_remove_embeddings.js is run repeatedly (both locally and on evergreen), a number of tests fail for the single node test suite. Patch with additional logging statements in the test failure logs here.

Upon investigating these failures, I observed that when createSearchIndex is called in vector_search_remove_embeddings.js, all the failing tests (as seen in patch linked above) returned early from this
runCreateSearchIndexOnPrimary method in src/mongo/shell/collection.js (specifically: when it finds an entry that did not have a "DOES_NOT_EXIST" status and {}is{_} queryable, it returns the response early). The tests fail with this error message: "cannot query index while in state INITIAL_SYNC". All the passing burn_in tests for single node test suite return at the very end (after the last assert.soon(...) call).

These failures do not appear to be the result of the added vector_search_remove_embeddings.js test or the minor code changes made in src/mongo/db/pipeline/search/document_source_vector_search.cpp.