P2P: Disable circuit relaying via libp2p.NoListenAddrs

[gmalouf]

Summary

This PR simply disables circuit relaying via libp2p.NoListenAddrs in either p2p or hybrid operating modes. More information on circuit relaying can be found at https://docs.libp2p.io/concepts/nat/circuit-relay/.

Test Plan

Existing tests should pass.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 56.15%. Comparing base (5869a00) to head (e959cfc).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6064      +/-   ##
==========================================
+ Coverage   56.11%   56.15%   +0.03%     
==========================================
  Files         488      488              
  Lines       69437    69434       -3     
==========================================
+ Hits        38966    38990      +24     
+ Misses      27821    27798      -23     
+ Partials     2650     2646       -4     

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