chore(pubsub): simplify prune backoff test

[vladopajic]

because it's vary flaky with quic

[vladopajic]

removed because there is no need to check that current values (dValues) are not applied.

[vladopajic]

checkUntilTimeout is more robust that await sleepAsync(pruneBackoff)

[rlve]

fair enough 👍

[github-actions]

🏁 Performance Summary

Commit: ad73721b99e800d4b8105a48afff6a3053fa7599

Scenario	Nodes	Total messages sent	Total messages received	Latency min (ms)	Latency max (ms)	Latency avg (ms)
Base test	10	100	900	0.286	2.373	0.948
Low Bandwidth rate 256kbit burst 8kbit limit 5000	10	100	900	0.254	77.980	13.820
Packet Reorder 15% 40% with 2ms delay	10	100	900	0.222	5.692	3.038
Queue Limit 5	10	100	900	0.322	2.511	0.965
Latency 100ms 20ms	10	100	900	41.766	234.944	113.505
Burst Loss 8% 30%	10	100	900	0.331	2.467	1.014
Duplication 2%	10	100	900	0.320	2.299	1.012
Corruption 0.5%	10	100	900	0.325	2.493	0.977
Packet Loss 5%	10	100	900	0.272	2.229	0.978
Combined Network Conditions	10	100	900	0.225	220.382	113.858