Merge "SF: stay with the current mode when all votes are NO_PREF" into main

    // If all layers are category NoPreference, use the current config.

    if (noPreferenceLayers + noVoteLayers == layers.size()) {

        ALOGV("All layers NoPreference");

        const auto ascendingWithPreferred =

                rankFrameRates(anchorGroup, RefreshRateOrder::Ascending, activeMode.getId());

        constexpr float kScore = std::numeric_limits<float>::max();

        FrameRateRanking currentMode;

        currentMode.emplace_back(ScoredFrameRate{getActiveModeLocked(), kScore});

        SFTRACE_FORMAT_INSTANT("%s (All layers NoPreference)",

                               to_string(ascendingWithPreferred.front().frameRateMode.fps).c_str());

        return {ascendingWithPreferred, kNoSignals};

                              to_string(currentMode.front().frameRateMode.fps).c_str());

        return {currentMode, kNoSignals};

    }

    const bool smoothSwitchOnly = categorySmoothSwitchOnlyLayers > 0;