fix to correctly parse denoms with slashes in the base denom (backport #1451)

[mergify]

This is an automatic backport of pull request #1451 done by Mergify.
Cherry-pick of 3a235af has failed:

On branch mergify/bp/release/v1.5.x/pr-1451
Your branch is up to date with 'origin/release/v1.5.x'.

You are currently cherry-picking commit 3a235af.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	new file:   docs/migrations/support-denoms-with-slashes.md
	modified:   modules/apps/transfer/types/trace.go
	modified:   modules/apps/transfer/types/trace_test.go

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   CHANGELOG.md

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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