Merge "audio policy: fix mmap behavior on device disconnection" into main

        // a preferred device in which case the first client drives the selection.

        if (desc->isMmap()) {

            auto matchingClients = desc->clientsList(

                    false /*activeOnly*/, filter, true /*preferredDevice*/);

                    false /*activeOnly*/, filter, false /*preferredDevice*/);

            if (matchingClients.empty()) {

                return nullptr;

            }