feat: Add Chat Trigger node (#7409)

Signed-off-by: Oleg Ivaniv <me@olegivaniv.com>
Co-authored-by: Jan Oberhauser <jan.oberhauser@gmail.com>
Co-authored-by: Jesper Bylund <mail@jesperbylund.com>
Co-authored-by: OlegIvaniv <me@olegivaniv.com>
Co-authored-by: Deborah <deborah@starfallprojects.co.uk>
Co-authored-by: Jan Oberhauser <janober@users.noreply.github.com>
Co-authored-by: Jon <jonathan.bennetts@gmail.com>
Co-authored-by: कारतोफ्फेलस्क्रिप्ट™ <aditya@netroy.in>
Co-authored-by: Michael Kret <88898367+michael-radency@users.noreply.github.com>
Co-authored-by: Giulio Andreini <andreini@netseven.it>
Co-authored-by: Mason Geloso <Mason.geloso@gmail.com>
Co-authored-by: Mason Geloso <hone@Masons-Mac-mini.local>
Co-authored-by: Mutasem Aldmour <mutasem@n8n.io>

packages/editor-ui/src/mixins/workflowHelpers.ts

@@ -168,6 +168,13 @@ export function resolveParameter(
 		nodeConnection,
 	);
 
+	if (_connectionInputData === null && contextNode && activeNode?.name !== contextNode.name) {
+		// For Sub-Nodes connected to Trigger-Nodes use the data of the root-node
+		// (Gets for example used by the Memory connected to the Chat-Trigger-Node)
+		const _executeData = executeData([contextNode.name], contextNode.name, inputName, 0);
+		_connectionInputData = get(_executeData, ['data', inputName, 0], null);
+	}
+
 	let runExecutionData: IRunExecutionData;
 	if (!executionData?.data) {
 		runExecutionData = {