chore: add client status check to verify membership rpc (backport #5870)

[mergify]

This is an automatic backport of pull request #5870 done by Mergify.
Cherry-pick of 94a4597 has failed:

On branch mergify/bp/08-wasm/release/v0.2.x+ibc-go-v8.2.x-wasmvm-v2.0.x/pr-5870
Your branch is up to date with 'origin/08-wasm/release/v0.2.x+ibc-go-v8.2.x-wasmvm-v2.0.x'.

You are currently cherry-picking commit 94a4597c.
  (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)

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   modules/core/02-client/keeper/grpc_query.go
	both modified:   modules/core/02-client/keeper/grpc_query_test.go

no changes added to commit (use "git add" and/or "git commit -a")

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

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[damiannolan]

🙏🏻