fix(minor-rewards)!: fix migration to handle unfunded pools

[cjcobb23]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 99.15254% with 1 line in your changes missing coverage. Please review.

Project coverage is 93.57%. Comparing base (37074f2) to head (f5a5aec).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...ontracts/rewards/src/contract/migrations/v1_0_0.rs	99.15%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #614      +/-   ##
==========================================
+ Coverage   93.55%   93.57%   +0.01%     
==========================================
  Files         235      235              
  Lines       33516    33627     +111     
==========================================
+ Hits        31357    31467     +110     
- Misses       2159     2160       +1     

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