fix(core): Ensure getNodeOutputs always returns an array#19069

cstuncsik merged 4 commits intomastern8n-io/n8n:masterfrom

pay-3738-follow-up-fix-for-ai-agent-tool-chain-data-accessn8n-io/n8n:pay-3738-follow-up-fix-for-ai-agent-tool-chain-data-accessCopy head branch name to clipboard