Fixes the issue observed in an [e2e test run](https://github.com/tendermint/tendermint/actions/runs/3588927225). The issue arises when the e2e runner process cannot connect to the remote node. In the previous version of this code, the runner would simply skip the transaction if the client couldn't connect. This pull request resurrects that behavior.
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#### PR checklist
- [ ] Tests written/updated, or no tests needed
- [ ] `CHANGELOG_PENDING.md` updated, or no changelog entry needed
- [ ] Updated relevant documentation (`docs/`) and code comments, or no
documentation updates needed