As part of SERVER-99150 we've implemented a lock ordering checker across the database. It detected a lock ordering conflict with the commit quorum lock used in the class and the RSTL lock.

The class has the following two lock orderings:

• Lock the commitQuorum mutex -> Lock the index build entry collection which happens to lock the RSTL
• Lock the RSTL lock -> Lock the commit quorum lock

As the commit quorum lock is exclusively locked and the RSTL lock is used during stepdown there might be a lock ordering conflict at play here that we haven't yet triggered. We should investigate if there's an actual issue and attempt to fix it if needed.