feat: use evm address as key for confirms instead of orch addr

[rach-id]

Overview

Closes #89

Checklist

• New and updated code has appropriate documentation
• New and updated code has new and/or updated testing
• Required CI checks are passing
• Visual proof for any user facing features like CLI or documentation updates
• Linked issues closed with keywords

[codecov-commenter]

Codecov Report

Merging #96 (d563b2c) into main (3d8a7cd) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main      #96   +/-   ##
=======================================
  Coverage   59.75%   59.75%           
=======================================
  Files           6        6           
  Lines         164      164           
=======================================
  Hits           98       98           
  Misses         53       53           
  Partials       13       13           

Impacted Files	Coverage Δ
p2p/keys.go	100.00% <100.00%> (ø)

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