[BP: release/v4 <- #71] [pfm][fix] patch arbitrary account passthrough

[mergify]

This is an automatic backport of pull request #71 done by Mergify.
Cherry-pick of d72e83c has failed:

On branch mergify/bp/release/v4/pr-71
Your branch is up to date with 'origin/release/v4'.

You are currently cherry-picking commit d72e83c.
  (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:   middleware/packet-forward-middleware/README.md
	modified:   middleware/packet-forward-middleware/router/ibc_middleware.go
	modified:   middleware/packet-forward-middleware/router/types/forward.go

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	both modified:   .gitignore
	both modified:   middleware/packet-forward-middleware/router/module_test.go
	deleted by us:   modules/ibc-hooks/client/cli/query.go
	deleted by us:   modules/ibc-hooks/hooks.go
	deleted by us:   modules/ibc-hooks/ibc_module.go
	deleted by us:   modules/ibc-hooks/ics4_middleware.go
	deleted by us:   modules/ibc-hooks/keeper/keeper.go
	deleted by us:   modules/ibc-hooks/sdkmodule.go
	deleted by us:   modules/ibc-hooks/simapp/ante.go
	deleted by us:   modules/ibc-hooks/simapp/app.go
	deleted by us:   modules/ibc-hooks/simapp/export.go
	deleted by us:   modules/ibc-hooks/simapp/simulation_test.go
	deleted by us:   modules/ibc-hooks/simapp/test_helpers.go
	deleted by us:   modules/ibc-hooks/tests/unit/mocks/isc4_middleware_mock.go
	deleted by us:   modules/ibc-hooks/tests/unit/module_test.go
	deleted by us:   modules/ibc-hooks/wasm_hook.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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