Testing Any for state encoding using evidence (DNM)

[aaronc]

ref: #6030

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For contributor use:

• 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.
• Wrote unit and integration tests
• Updated relevant documentation (docs/) or specification (x/<module>/spec/)
• Added relevant godoc comments.
• Added a relevant changelog entry to the Unreleased section in CHANGELOG.md
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For admin use:

• Added appropriate labels to PR (ex. WIP, R4R, docs, etc)
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[codecov]

Codecov Report

Merging #6066 into master will decrease coverage by 0.03%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #6066      +/-   ##
==========================================
- Coverage   54.64%   54.60%   -0.04%     
==========================================
  Files         426      427       +1     
  Lines       25890    25908      +18     
==========================================
  Hits        14148    14148              
- Misses      10763    10781      +18     
  Partials      979      979