fix(Email Trigger (IMAP) Node): Ensure connection close does not bloc…

…k deactivation (#10689)

packages/nodes-base/nodes/EmailReadImap/v2/EmailReadImapV2.node.ts

@@ -14,7 +14,7 @@ import type {
 	ITriggerResponse,
 	JsonObject,
 } from 'n8n-workflow';
-import { NodeConnectionType, NodeOperationError } from 'n8n-workflow';
+import { NodeConnectionType, NodeOperationError, TriggerCloseError } from 'n8n-workflow';
 
 import type { ImapSimple, ImapSimpleOptions, Message, MessagePart } from '@n8n/imap';
 import { connect as imapConnect, getParts } from '@n8n/imap';
@@ -669,14 +669,19 @@ export class EmailReadImapV2 implements INodeType {
 		}
 
 		// When workflow and so node gets set to inactive close the connection
-		async function closeFunction() {
+		const closeFunction = async () => {
 			closeFunctionWasCalled = true;
 			if (reconnectionInterval) {
 				clearInterval(reconnectionInterval);
 			}
-			if (connection.closeBox) await connection.closeBox(false);
-			connection.end();
-		}
+			try {
+				if (connection.closeBox) await connection.closeBox(false);
+				connection.end();
+			} catch (error) {
+				// eslint-disable-next-line n8n-nodes-base/node-execute-block-wrong-error-thrown
+				throw new TriggerCloseError(this.getNode(), { cause: error as Error, level: 'warning' });
+			}
+		};
 
 		// Resolve returned-promise so that waiting errors can be emitted
 		returnedPromise.resolve();