refactor: deterministic tests and add gas tests

[atheeshp]

Description

follow-up: #13329

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Author Checklist

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please add links to any relevant follow up issues.

I have...

• included the correct type prefix in the PR title
• added ! to the type prefix if API or client breaking change
• targeted the correct branch (see PR Targeting)
• provided a link to the relevant issue or specification
• followed the guidelines for building modules
• included the necessary unit and integration tests
• added a changelog entry to CHANGELOG.md
• included comments for documenting Go code
• updated the relevant documentation or specification
• reviewed "Files changed" and left comments if necessary
• confirmed all CI checks have passed

Reviewers Checklist

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your handle next to the items reviewed if you only reviewed selected items.

I have...

• confirmed the correct type prefix in the PR title
• confirmed ! in the type prefix if API or client breaking change
• confirmed all author checklist items have been addressed
• reviewed state machine logic
• reviewed API design and naming
• reviewed documentation is accurate
• reviewed tests and test coverage
• manually tested (if applicable)

[codecov]

Codecov Report

Merging #13539 (672a9d7) into main (209797f) will increase coverage by 0.00%.
The diff coverage is 100.00%.

Additional details and impacted files

@@           Coverage Diff            @@
##             main   #13539    +/-   ##
========================================
  Coverage   54.69%   54.69%            
========================================
  Files         647      645     -2     
  Lines       55915    55745   -170     
========================================
- Hits        30582    30491    -91     
+ Misses      22840    22764    -76     
+ Partials     2493     2490     -3     

Impacted Files	Coverage Δ
store/rootmulti/store.go	74.11% <100.00%> (+0.29%)	⬆️
client/v2/autocli/cmd.go
client/v2/autocli/query.go
x/group/keeper/keeper.go	56.64% <0.00%> (+0.39%)	⬆️
crypto/keys/internal/ecdsa/privkey.go	83.01% <0.00%> (+1.88%)	⬆️
x/distribution/simulation/operations.go	90.32% <0.00%> (+9.67%)	⬆️

[amaury1093]

LGTM, this looks cleaner. @atheeshp feel free to merge once the last nits are addressed