Add yaml test case for NullablesAndOptionalsStruct list

[todo]

connectedhomeip/src/app/clusters/test-cluster-server/test-cluster-server.cpp

Lines 260 to 265 in b8852b5

	// TODO Add yaml test case for NullablesAndOptionalsStruct list
	return CHIP_NO_ERROR;
	}
	} // namespace
	bool emberAfTestClusterClusterTestCallback(app::CommandHandler *, const app::ConcreteCommandPath & commandPath,

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This issue was generated by todo based on a TODO comment in b8852b5 when #11520 was merged. cc @yufengwangca.