fix: ica handshake reopening channel - use GetAppVersion in favour of channel.Version (backport #2302)

[mergify]

This is an automatic backport of pull request #2302 done by Mergify.
Cherry-pick of 9e6246f has failed:

On branch mergify/bp/release/v5.0.x/pr-2302
Your branch is up to date with 'origin/release/v5.0.x'.

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Changes to be committed:
	modified:   modules/apps/27-interchain-accounts/controller/keeper/handshake.go
	modified:   modules/apps/27-interchain-accounts/host/ibc_module_test.go
	modified:   modules/apps/27-interchain-accounts/host/keeper/handshake.go
	modified:   testing/simapp/app.go

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   CHANGELOG.md
	both modified:   modules/apps/27-interchain-accounts/host/keeper/keeper.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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[damiannolan]

needs #2361