fix(giga): return all balances in bank keeper

[arajasek]

Describe your changes and provide context

this matches the behaviour in the v2 keeper, and fixes the mismatch in this block. Slack discussion here.

Testing performed to validate your change

Apphash mismatch fixed.

[github-actions]

The latest Buf updates on your PR. Results from workflow Buf / buf (pull_request).

Build	Format	Lint	Breaking	Updated (UTC)
✅ passed	✅ passed	✅ passed	✅ passed	Feb 10, 2026, 4:32 PM

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 52.74%. Comparing base (077f083) to head (a8dd911).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2832      +/-   ##
==========================================
- Coverage   56.77%   52.74%   -4.04%     
==========================================
  Files        2070     1067    -1003     
  Lines      168281    87069   -81212     
==========================================
- Hits        95545    45922   -49623     
+ Misses      64252    36811   -27441     
+ Partials     8484     4336    -4148     

Flag	Coverage Δ
sei-chain	?
sei-cosmos	48.13% <ø> (ø)
sei-db	68.72% <ø> (ø)
sei-tendermint	58.86% <ø> (+0.10%)	⬆️

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