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/credentials/ZscalerZiaApi.credentials.ts

@@ -1,3 +1,4 @@
+import { ApplicationError } from 'n8n-workflow';
 import type {
 	IAuthenticateGeneric,
 	ICredentialDataDecryptedObject,
@@ -120,7 +121,9 @@ export class ZscalerZiaApi implements ICredentialType {
 			?.find((entry) => entry.includes('JSESSIONID'));
 
 		if (!cookie) {
-			throw new Error('No cookie returned. Please check your credentials.');
+			throw new ApplicationError('No cookie returned. Please check your credentials.', {
+				level: 'warning',
+			});
 		}
 
 		return { cookie };