Make HasCapability private

[expertdicer]

Description

closes: #3289

Commit Message / Changelog Entry

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Before we can merge this PR, please make sure that all the following items have been
checked off. If any of the checklist items are not applicable, please leave them but
write a little note why.

• Targeted PR against correct branch (see CONTRIBUTING.md).
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Code follows the module structure standards and Go style guide.
• Wrote unit and integration tests.
• Updated relevant documentation (docs/) or specification (x/<module>/spec/).
• Added relevant godoc comments.
• Provide a commit message to be used for the changelog entry in the PR description for review.
• Re-reviewed Files changed in the Github PR explorer.
• Review Codecov Report in the comment section below once CI passes.

[codecov-commenter]

Codecov Report

Merging #3303 (fd52dfd) into main (b562f24) will decrease coverage by 0.06%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3303      +/-   ##
==========================================
- Coverage   78.59%   78.54%   -0.06%     
==========================================
  Files         181      181              
  Lines       12546    12581      +35     
==========================================
+ Hits         9861     9882      +21     
- Misses       2252     2265      +13     
- Partials      433      434       +1     

Impacted Files	Coverage Δ
...7-interchain-accounts/controller/keeper/account.go	80.85% <100.00%> (ø)
...7-interchain-accounts/controller/keeper/genesis.go	92.00% <100.00%> (ø)
...27-interchain-accounts/controller/keeper/keeper.go	89.65% <100.00%> (ø)
...apps/27-interchain-accounts/host/keeper/genesis.go	89.47% <100.00%> (ø)
.../apps/27-interchain-accounts/host/keeper/keeper.go	85.57% <100.00%> (ø)
modules/apps/transfer/keeper/genesis.go	89.47% <100.00%> (ø)
modules/apps/transfer/keeper/keeper.go	91.17% <100.00%> (ø)

... and 3 files with indirect coverage changes

[crodriguezvega]

Thank you, @expertdicer!

[expertdicer]

Thank you, @expertdicer!

You're welcome!

[crodriguezvega]

Thank you, @expertdicer. I think if we remove those testing functions and rebase with main, the PR should be ready to be merged. :)

[crodriguezvega]

Thank you, @expertdicer. I think if we remove those testing functions and rebase with main, the PR should be ready to be merged. :)

[crodriguezvega]

We're almost there, @expertdicer! Just need to make the linter happy now. :)

[damiannolan]

Thanks @expertdicer ❤️

[colin-axner]

Thank you @expertdicer! Appreciate the followups and your patience 🙏