bug: investigate usage of filter subscriptions on non-fleet nodes

[danisharora099]

This is an investigation request

Problem

Based on status-im/status-go#5344, it was observed that non-fleet nodes found out using Peer Exchange instability in terms of e2e tests using Filter because of some instability.

Proposed Solutions

• Investigate if this problem is client-agnostic, by investigation in js-waku
• Translate results to status-go/go-waku

[danisharora099]

Ah, not required.
Based on status-im/status-go#5344 (comment), it seems that status-go does not filter peers by shards/pubsub topics which seems to be the root cause.