Issue in ts-sim-test for portal_historyRoutingTableInfo when testing with single client

[kdeme]

I think there is a bug in the filtering of the clients when you run this test for one specific client: https://github.com/ethereum/portal-hive/blob/main/hivesim-ts/src/simulators/ts-sim-test/main.ts#L80

I.e. using the flag --client fluffy or another single client.
In that scenario the test will run between two fluffy clients, however both will get filtered out, meaning that it will not test for the proper amount of nodes in the routing table.