fix: replace IsEqual with Equal

[ulbqb]

Description

closes: #XXXX

cherry-pick: cosmos/cosmos-sdk#14739

Motivation and context

How has this been tested?

Screenshots (if appropriate):

Checklist:

• I followed the contributing guidelines and code of conduct.
• I have added a relevant changelog to CHANGELOG.md
• I have added tests to cover my changes.
• I have updated the documentation accordingly.
• I have updated API documentation client/docs/swagger-ui/swagger.yaml

[codecov]

Codecov Report

Attention: Patch coverage is 65.00000% with 7 lines in your changes are missing coverage. Please review.

Project coverage is 70.41%. Comparing base (05ff4ea) to head (7b7c491).
Report is 1 commits behind head on main.

❗ Current head 7b7c491 differs from pull request most recent head 5cebd5f. Consider uploading reports for the commit 5cebd5f to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1314      +/-   ##
==========================================
- Coverage   70.41%   70.41%   -0.01%     
==========================================
  Files         643      643              
  Lines       54758    54754       -4     
==========================================
- Hits        38560    38555       -5     
- Misses      14023    14025       +2     
+ Partials     2175     2174       -1     

Files	Coverage Δ
types/coin.go	94.69% <100.00%> (-0.03%)	⬇️
x/auth/vesting/types/vesting_account.go	86.82% <100.00%> (ø)
x/bank/keeper/genesis.go	84.00% <100.00%> (ø)
x/bank/keeper/invariants.go	61.53% <100.00%> (ø)
x/bank/types/msgs.go	97.50% <100.00%> (ø)
x/distribution/keeper/invariants.go	54.63% <100.00%> (ø)
x/foundation/keeper/internal/invariants.go	100.00% <100.00%> (ø)
x/gov/types/params.go	7.05% <100.00%> (ø)
x/staking/genesis.go	58.86% <100.00%> (ø)
simapp/test_helpers.go	10.37% <0.00%> (ø)
... and 5 more

... and 1 file with indirect coverage changes

[ulbqb]

Can I ignore code cov failure? This is about deprecated function.

[jaeseung-bae]

Please put proper labels.