refactor: Switch plain errors in nodes-base to ApplicationError (no-changelog) (#7914)

Ensure all errors in `nodes-base` are `ApplicationError` or children of
it and contain no variables in the message, to continue normalizing all
the backend errors we report to Sentry. Also, skip reporting to Sentry
errors from user input and from external APIs. In future we should
refine `ApplicationError` to more specific errors.

Follow-up to: [#7877](https://github.com/n8n-io/n8n/pull/7877)

- [x] Test workflows:
https://github.com/n8n-io/n8n/actions/runs/7084627970
- [x] e2e: https://github.com/n8n-io/n8n/actions/runs/7084936861

---------

Co-authored-by: Michael Kret <michael.k@radency.com>

packages/nodes-base/nodes/FormIo/GenericFunctions.ts

@@ -5,7 +5,7 @@ import type {
 	IWebhookFunctions,
 	JsonObject,
 } from 'n8n-workflow';
-import { NodeApiError } from 'n8n-workflow';
+import { ApplicationError, NodeApiError } from 'n8n-workflow';
 
 interface IFormIoCredentials {
 	environment: 'cloudHosted' | ' selfHosted';
@@ -42,8 +42,9 @@ async function getToken(
 		const responseObject = await this.helpers.request(options);
 		return responseObject.headers['x-jwt-token'];
 	} catch (error) {
-		throw new Error(
+		throw new ApplicationError(
 			'Authentication Failed for Form.io. Please provide valid credentails/ endpoint details',
+			{ level: 'warning' },
 		);
 	}
 }