Problem: ibc callback is not used

[mmsqe]

👮🏻👮🏻👮🏻 !!!! REFERENCE THE PROBLEM YOUR ARE SOLVING IN THE PR TITLE AND DESCRIBE YOUR SOLUTION HERE !!!! DO NOT FORGET !!!! 👮🏻👮🏻👮🏻

PR Checklist:

• Have you read the CONTRIBUTING.md?
• Does your PR follow the C4 patch requirements?
• Have you rebased your work on top of the latest master?
• Have you checked your code compiles? (make)
• Have you included tests for any non-trivial functionality?
• Have you checked your code passes the unit tests? (make test)
• Have you checked your code formatting is correct? (go fmt)
• Have you checked your basic code style is fine? (golangci-lint run)
• If you added any dependencies, have you checked they do not contain any known vulnerabilities? (go list -json -m all | nancy sleuth)
• If your changes affect the client infrastructure, have you run the integration test?
• If your changes affect public APIs, does your PR follow the C4 evolution of public contracts?
• If your code changes public APIs, have you incremented the crate version numbers and documented your changes in the CHANGELOG.md?
• If you are contributing for the first time, please read the agreement in CONTRIBUTING.md now and add a comment to this pull request stating that your PR is in accordance with the Developer's Certificate of Origin.

Thank you for your code, it's appreciated! :)

[codecov]

Codecov Report

Merging #1185 (947abe0) into main (f11271b) will decrease coverage by 0.34%.
The diff coverage is 8.41%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1185      +/-   ##
==========================================
- Coverage   37.62%   37.28%   -0.34%     
==========================================
  Files         114      115       +1     
  Lines       10073    10169      +96     
==========================================
+ Hits         3790     3792       +2     
- Misses       5903     5994      +91     
- Partials      380      383       +3     

Files	Coverage Δ
x/cronos/events/events.go	27.27% <ø> (ø)
x/cronos/keeper/evm.go	54.54% <100.00%> (-0.35%)	⬇️
x/cronos/migrations/v2/migrate.go	57.14% <25.00%> (-15.59%)	⬇️
x/cronos/types/params.go	68.91% <28.57%> (-3.14%)	⬇️
x/cronos/keeper/precompiles/ica.go	6.66% <22.22%> (+0.52%)	⬆️
x/cronos/simulation/genesis.go	0.00% <0.00%> (ø)
x/cronos/keeper/keeper.go	65.77% <0.00%> (-11.10%)	⬇️
...os/precompile/icacallback/i_ica_callback.abigen.go	0.00% <0.00%> (ø)

[yihuang]

LGTM, can you add a changelog