Cleanup the output of runtime filters in the runtime profile

When running a query with RUNTIME_FILTER_MODE=2, runtime filters with local targets are registered in the coordinator and show up in the runtime profile (Filter routing table) even if they are never processed by the coordinator. Because filters with local targets don't get updated in the coordinator, the runtime profile incorrectly indicates that the number of pending backends is non-zero. We need to either remove filters with local targets from the output or fix the output of the runtime filter routing table to not include misleading information.