[Xero Export] Push Xero auto-sync errors to NewDot

[lakchote]

Main issue: https://github.com/Expensify/Expensify/issues/409245
Doc section: https://docs.google.com/document/d/1aQl-AK_F6IqszWYG2aEllTsD5x3h4b8Zu0XEG0LuQ08/edit#heading=h.1anhpggeh7wm

Feature Description

• add errorMessage and isAuthenticationError properties to the IntegrationLastSync data in IS when the XeroSync job fails.
• add an INTEGRATIONSMESSAGE action to the #admins room for the policy with the error message

Automated Tests

• Add a test to IS verifying errorMessage and isAuthenticationError are set on the IntegrationLastSync
• Add an Auth test for SavePolicy verifying that an INTEGRATIONSMESSAGE action gets posted to the #admins room when the last sync is a failure

[lakchote]

Same comment as #44679 (comment)

[lakchote]

add errorMessage and isAuthenticationError properties to the IntegrationLastSync data in IS when the XeroSync job fails.

done by https://github.com/Expensify/Integration-Server/pull/7982

add an INTEGRATIONSMESSAGE action to the #admins room for the policy with the error message

already solved by https://github.com/Expensify/Auth/pull/11445

Closing the issue.