chore(tests): add case for latest height err case.

[DimitrisJim]

Description

see #7153 (comment)

closes: #7153

---

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• Wrote unit and integration tests.
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[sonarqubecloud]

Quality Gate passed for 'ibc-go'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[colin-axner]

ACK, okay as is. If we used mock client instead of tendermint in core, it'd be easier to add code cov, but adding this test case doesn't add much value