fix: fix bech32 cache to get bech32 from proper cache

[wetcod]

Description

fix bech32 cache to execute type casting if only values exists

closes: #XXXX

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• 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
• Re-reviewed Files changed in the Github PR explorer
• Review Codecov Report in the comment section below once CI passes

[codecov]

Codecov Report

Merging #219 (8ecf862) into v2/develop (f904f13) will increase coverage by 0.03%.
The diff coverage is 66.66%.

@@              Coverage Diff               @@
##           v2/develop     #219      +/-   ##
==============================================
+ Coverage       53.46%   53.50%   +0.03%     
==============================================
  Files             652      652              
  Lines           47379    47381       +2     
==============================================
+ Hits            25332    25350      +18     
+ Misses          19186    19172      -14     
+ Partials         2861     2859       -2     

Impacted Files	Coverage Δ
types/address.go	66.78% <66.66%> (+6.05%)	⬆️