chore: improve DenomTrace grpc (backport #1342)

[mergify]

This is an automatic backport of pull request #1342 done by Mergify.
Cherry-pick of 23e7e7d has failed:

On branch mergify/bp/release/v3.0.x/pr-1342
Your branch is up to date with 'origin/release/v3.0.x'.

You are currently cherry-picking commit 23e7e7d.
  (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:
	modified:   docs/client/swagger-ui/swagger.yaml
	modified:   modules/apps/transfer/keeper/grpc_query.go
	modified:   modules/apps/transfer/keeper/grpc_query_test.go
	modified:   modules/apps/transfer/types/query.pb.go
	modified:   proto/ibc/applications/transfer/v1/query.proto

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	both modified:   CHANGELOG.md
	both modified:   docs/ibc/proto-docs.md
	deleted by us:   docs/migrations/v3-to-v4.md
	both modified:   modules/apps/transfer/client/cli/query.go

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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