[Alerting][7.x] Update rules detail page to use new saved object resolve API when necessary

[chrisronline]

Relates to #100067

When we load a rule on the rule detail page, we need to ensure we are properly calling the new savedObjectsClient.resolve() API which will return not only the saved object, but also information about how the saved object ID resolved due to the migration happening across all saved objects. This will ensure that users loading the page with an outdated ID will still see the appropriate rule instead of an error page. The nice thing here is the security team has provided reusable client code that makes this super easy.

An important detail here is that the security team is adding telemetry to how often savedObjects.resolve() is called (so they eventually know when we can safely remove it) and we need to only call this API when we need to. This means we will have to call savedObjectsClient.get() first and if that returns a 400 not found, then we call the new .resolve() API.

Either way, we'll need to add a new HTTP route because we cannot leverage the saved objects client in the browser because alert and action are hidden types. We will need a new route that either simply calls savedObjectsClient.resolve() or the route itself can call savedObjectsClient.get(), handle the 400, then return savedObjectsClient.resolve().

See the PoC PR for more insight into how this might work.

[elasticmachine]

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