Data race condition

The value of the shared data will be determined by the interleaving of thread execution. Thread shared data is accessed without holding an appropriate lock, possibly causing a race condition
/src/mongo/db/repl/tenant_migration_recipient_service.cpp:2855: MISSING_LOCK 170779 Accessing "this->this->_importedFilesPromise" without holding lock "mongo::repl::TenantMigrationRecipientService::Instance._mutex". Elsewhere, "mongo::repl::TenantMigrationRecipientService::Instance._importedFilesPromise" is written to with "Instance._mutex" held 2 out of 2 times.