fix: make the orchestrator sign by default

[rach-id]

Overview

Closes #513

This makes the orchestrator signs by default, instead of needing to be part of a valset to sign. The only case it doesn't sign is when it finds a valset and it's not part of it.

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 #521 (bab5373) into main (69e71e8) will increase coverage by 0.10%.
Report is 7 commits behind head on main.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main     #521      +/-   ##
==========================================
+ Coverage   24.38%   24.48%   +0.10%     
==========================================
  Files          29       29              
  Lines        2949     2936      -13     
==========================================
  Hits          719      719              
+ Misses       2144     2131      -13     
  Partials       86       86              

Files	Coverage Δ
orchestrator/orchestrator.go	1.94% <0.00%> (+0.07%)	⬆️

[evan-forbes]

nice debugging.