Merge "Catch exceptions when grouping sparse groups" into main

            // scenario 3: sparse/singleton groups

            if (Flags.notificationForceGroupSingletons()) {

                try {

                    groupSparseGroups(record, notificationList, summaryByGroupKey, sectioner,

                        fullAggregateGroupKey);

                } catch (Throwable e) {

                    Slog.wtf(TAG, "Failed to group sparse groups", e);

                }

            }

        }

    }