[Security Solution] [Platform] Need to resolve action connectors

[dhurley14]

If an action connector is created pre-8.0 in a non-default space, that connector will have a new id generated in > 8.0 and will not be found when trying to create new rules or importing rules into the security solution with references to that action connector.

1. We need to expose a resolve function in the actions client
2. We need to update this line in the security solution to use the resolve function instead of the getAll

Edit: After meeting with the team looks like this should be part of the work for #118767 and involves using those same functions the SOM uses for determining conflicts and/or updating fields on import

[elasticmachine]

Pinging @elastic/kibana-alerting-services (Team:Alerting Services)

[elasticmachine]

Pinging @elastic/security-detections-response (Team:Detections and Resp)