[robustness tests] Add Watch without PrevKV or ProgressNotify to Kubernetes traffic generator #20622
Description
What would you like to be added?
Kubernetes traffic generator should use Watch without ProgressNotify (like apiserver does for events) and without PrevKV (like it does for compact_rev_key). The latter will also help cover the case of non-recursive watch.
In case of Watches on events resource, traffic generator could also open multiple watch streams within the same gRPC stream to better mimic what apiserver does.
Work on this was partially started in #20577