[azure_frontdoor] access ingest pipeline does not preserve event.original when preserve toggle selected

[bvader]

Issue: azure frontdoor access does not preserve event.original when we toggle selected Expected Result: event.orginal should be preserved, there is no condition in the ingest pipeline

See Code:

https://github.com/elastic/integrations/tree/main/packages/azure_frontdoor/data_stream/access/elasticsearch/ingest_pipeline

[elasticmachine]

Pinging @elastic/security-external-integrations (Team:Security-External Integrations)

[nicpenning]

I stumbled across this problem when trying to use this integration. This should fix it: https://github.com/elastic/integrations/pull/7464