fix: orchestrator sign up to last unbonding period

[rach-id]

Overview

Closes #304

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 #306 (546392d) into main (59db7a2) will decrease coverage by 0.29%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main     #306      +/-   ##
==========================================
- Coverage   43.42%   43.14%   -0.29%     
==========================================
  Files          26       26              
  Lines        1992     2005      +13     
==========================================
  Hits          865      865              
- Misses       1005     1018      +13     
  Partials      122      122              

Impacted Files	Coverage Δ
orchestrator/orchestrator.go	10.54% <0.00%> (-0.46%)	⬇️

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