don't track peer ids in rcmgr metrics

[vyzo]

follow up from #8089 -- don't track things that come from the network, as the metrics subsystem is not exactly bulletproof and can end up using uncontrolled memory because of spam under high load conditions.

[codecov]

Codecov Report

Merging #8099 (9c00af1) into master (a3e785c) will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #8099   +/-   ##
=======================================
  Coverage   39.33%   39.34%           
=======================================
  Files         666      666           
  Lines       72468    72462    -6     
=======================================
+ Hits        28503    28507    +4     
+ Misses      39043    39026   -17     
- Partials     4922     4929    +7     

Impacted Files	Coverage Δ
node/modules/lp2p/rcmgr.go	16.19% <ø> (+0.87%)	⬆️
extern/sector-storage/worker_tracked.go	79.46% <0.00%> (-7.15%)	⬇️
chain/events/observer.go	71.64% <0.00%> (-6.72%)	⬇️
chain/stmgr/call.go	67.87% <0.00%> (-3.64%)	⬇️
blockstore/autobatch.go	56.30% <0.00%> (-1.69%)	⬇️
extern/sector-storage/sched.go	83.12% <0.00%> (-1.65%)	⬇️
chain/store/store.go	63.66% <0.00%> (-1.34%)	⬇️
chain/gen/gen.go	68.19% <0.00%> (-1.23%)	⬇️
miner/miner.go	54.75% <0.00%> (-0.99%)	⬇️
chain/messagepool/messagepool.go	63.15% <0.00%> (-0.86%)	⬇️
... and 18 more

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