feat: x/staking deterministic tests

[atheeshp]

Description

Closes: #13193

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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 #13426 (30fc47c) into main (1f10efe) will increase coverage by 0.01%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #13426      +/-   ##
==========================================
+ Coverage   54.70%   54.71%   +0.01%     
==========================================
  Files         645      645              
  Lines       55691    55691              
==========================================
+ Hits        30465    30472       +7     
+ Misses      22737    22732       -5     
+ Partials     2489     2487       -2     

Impacted Files	Coverage Δ
x/gov/keeper/msg_server.go	83.07% <100.00%> (ø)
x/staking/simulation/operations.go	75.91% <0.00%> (+1.37%)	⬆️
crypto/keys/internal/ecdsa/privkey.go	83.01% <0.00%> (+1.88%)	⬆️

[amaury1093]

Overall lgtm, will have another round of review to check details

[amaury1093]

LGTM, pending #13426 (comment)