In SERVER-64482 Make SBE $lookup aware of collation, we found $lookup has an internal parameter _internalCollation and we decided to not push down $lookup to SBE when this parameter is present in PM-2449.

This ticket is a placeholder/reminder for us to see how do we handle this in SBE when we make more progress deprecating the classic engine.

This _internalCollation parameter was introduced in SERVER-53637 for resharding. As part of the resharding effort we need to run a pipeline with the collection’s default collation, but then use the simple collation for a specific comparison concerning the chunk boundaries.