Enable splittable timers for temporal join, temporal sort and windowed aggregation in SQL/Table API

This is a follow up for https://cwiki.apache.org/confluence/display/FLINK/FLIP-443%3A+Interruptible+timers+firing . Temporal join, temporal sort and both windowed and table windowed aggregations in Table API/SQL can have large amount of registered/fired time, while at the same time enabling splittable timers shouldn't cause any side effects for those operators.