test(editor): Fix flaky e2e tests (#4779)

* test(editor): Fix default-owner and credentials saving e2e specs

* test(editor): fix webhook node test

* test(editor): add cy command for browser permissions

* test(editor): add cy command for reading clipboard

* Fix 3-default-owner spec

* Resolve review comments

* Merge spec

* Fix http node and expression editor modal specs

* Add optional param to credentials modal saving action to wait for the test endpoint

* Improve sidebar items clicking and increase credentials saving timeout

* Rename http e2e spec to fix ordering

* Fix pasting and copying of nodes e2e spec

* Make sure to only access error.cause if it exists

* Wait longer for the keyboard press

* Make sure to focus the body when typing

* Try type delay

* Use meta key based on the running platform

* Fix flaky workflowTagElements getter

Co-authored-by: Csaba Tuncsik <csaba@n8n.io>

packages/cli/src/CredentialsHelper.ts

@@ -695,7 +695,7 @@ export class CredentialsHelper extends ICredentialsHelper {
 							`Received HTTP status code: ${errorResponseData.statusCode}`,
 					};
 				}
-			} else if (error.cause.code) {
+			} else if (error.cause?.code) {
 				return {
 					status: 'Error',
 					message: error.cause.code,