fix: Fix template credential setup for nodes that dont have credentials (#8208)

Fix template credential setup for templates whose workflow includes
nodes that require credentials but the workflow definition does not have
them defined. Like for example
https://n8n.io/workflows/1344-save-email-attachments-to-nextcloud/

packages/editor-ui/src/utils/nodes/nodeTransforms.ts

@@ -0,0 +1,33 @@
+import type { INodeUi } from '@/Interface';
+import type { NodeTypeProvider } from '@/utils/nodeTypes/nodeTypeTransforms';
+import type { INodeCredentialDescription } from 'n8n-workflow';
+import { NodeHelpers } from 'n8n-workflow';
+
+/**
+ * Returns the credentials that are displayable for the given node.
+ */
+export function getNodeTypeDisplayableCredentials(
+	nodeTypeProvider: NodeTypeProvider,
+	node: Pick<INodeUi, 'parameters' | 'type' | 'typeVersion'>,
+): INodeCredentialDescription[] {
+	const nodeType = nodeTypeProvider.getNodeType(node.type, node.typeVersion);
+	if (!nodeType?.credentials) {
+		return [];
+	}
+
+	const nodeTypeCreds = nodeType.credentials;
+
+	// We must populate the node's parameters with the default values
+	// before we can check which credentials are available, because
+	// credentials can have conditional requirements that depend on
+	// node parameters.
+	const nodeParameters =
+		NodeHelpers.getNodeParameters(nodeType.properties, node.parameters, true, false, node) ??
+		node.parameters;
+
+	const displayableCredentials = nodeTypeCreds.filter((credentialTypeDescription) => {
+		return NodeHelpers.displayParameter(nodeParameters, credentialTypeDescription, node);
+	});
+
+	return displayableCredentials;
+}