Uninitialized scalar field

The field will contain an arbitrary value left over from earlier computations. A scalar field is not initialized by the constructor
/src/mongo/crypto/fle_crypto_predicate.h:89: UNINIT_CTOR 135481 Class member declaration for "_contentionFactor".
/src/mongo/crypto/fle_crypto_predicate.h:61: UNINIT_CTOR 135481 Non-static class member "_contentionFactor" is not initialized in this constructor nor in any functions that it calls.