fix: simulation failures

[kocubinski]

Description

Closes: #12806

• Fix a logic error in store diff which feat(staking): migrate x/params away from x/staking #12409 surfaced
• Fix a bug in x/gov sim operations introduced in feat!: initial deposit requirement for proposals #12771

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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 #12858 (4878c05) into main (e2d6cbd) will decrease coverage by 0.02%.
The diff coverage is 57.14%.

@@            Coverage Diff             @@
##             main   #12858      +/-   ##
==========================================
- Coverage   56.25%   56.22%   -0.03%     
==========================================
  Files         648      644       -4     
  Lines       55031    54933      -98     
==========================================
- Hits        30956    30886      -70     
+ Misses      21581    21557      -24     
+ Partials     2494     2490       -4     

Impacted Files	Coverage Δ
x/staking/keeper/genesis.go	53.38% <0.00%> (-1.17%)	⬇️
x/staking/simulation/decoder.go	85.71% <0.00%> (-14.29%)	⬇️
store/types/utils.go	100.00% <100.00%> (ø)
x/gov/simulation/operations.go	84.18% <100.00%> (ø)
tx/textual/valuerenderer/valuerenderer.go
tx/textual/valuerenderer/int.go
tx/textual/valuerenderer/bytes.go
tx/textual/valuerenderer/dec.go
x/group/keeper/keeper.go	56.29% <0.00%> (+0.39%)	⬆️
crypto/keys/internal/ecdsa/privkey.go	83.01% <0.00%> (+1.88%)	⬆️