PM-3190 switches to a new protocol for handling updateOne/deleteOne with _id without shard key. We need to make equivalent changes on the bulk_write_exec code path to those that have been made for batch_write_exec and add equivalent unit tests.

See specifically the changes from these commits:

• https://github.com/mongodb/mongo/commit/35053bae149cd3d2ab50afb3c6dbf2f6ed38d8c4
• https://github.com/mongodb/mongo/commit/eac8738fb5cdcf54ef416f3d7098fb990992cfde
• https://github.com/mongodb/mongo/commit/a6c0b80921e028e256e39536e288cf222c1b53a6