The issue started to pop up on MacOS builds after changing the change_stream_pit_pre_images.js test:

• replaces friendlyEqual() with bsonUnorderedFieldsCompare() in assert.docEq() as the use of friendlyEqual() is discouraged
• adjusted change_stream_pit_pre_images.js to use coll.count() and coll.hashAllDocs(), because bsonUnorderedFieldsCompare() does not support arguments over 16MB (SERVER-71979)

However, using coll.count() in test asserts can lead to sporadic failures (as described here).