feat: refine local peer exchange discovery and heuristics

[weboko]

Description

During work on #2477 it was discovered that Local Peer discovery module can be improved especially due to reliance on LocalStorage that is only for Browsers and its consumption in Connection Manager.

Proposed Solution / Feature Design

This item is to ensure we have straightforward execution of Local Discovery:

• that can be done in NodeJS and Browser without errors;
• has comprehensive testing;
• uses most reliable way to get peers and store them;
• ensures discovered peers are picked up fast in Connection Monitor;