fix(container)!: fix issue providing a module-scoped dep from a module

[aaronc]

Description

Uncovered in #11900.

Also adds the new type OwnModuleKey for a module to retrieve its own module key rather than providing a module-scoped dependency to other modules.

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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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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 #11913 (322fca9) into main (10af6f9) will increase coverage by 0.02%.
The diff coverage is 56.25%.

@@            Coverage Diff             @@
##             main   #11913      +/-   ##
==========================================
+ Coverage   66.25%   66.28%   +0.02%     
==========================================
  Files         689      689              
  Lines       72196    72211      +15     
==========================================
+ Hits        47835    47862      +27     
+ Misses      21645    21629      -16     
- Partials     2716     2720       +4     

Impacted Files	Coverage Δ
container/module_key.go	100.00% <ø> (ø)
container/container.go	83.33% <56.25%> (-1.43%)	⬇️
x/group/keeper/keeper.go	55.04% <0.00%> (+0.42%)	⬆️
x/distribution/simulation/operations.go	90.27% <0.00%> (+9.72%)	⬆️