Improve error messages related to Jetpack connection

The app displays errors directly as they come from the backend, which sometimes results in cryptic messages. The details are welcome because it provides the user with something that they can search for online or refer to when contacting support. However, in some scenarios, the app could also show a link to https://jetpack.com/support/reconnecting-reinstalling-jetpack/ and/or https://jetpack.com/support/getting-started-with-jetpack/troubleshoot-jetpack-connection-error-messages/, which is a common step that the support asks the user to perform to resolve some of these issues.

Start by tracing where Jetpack connection backend errors are presented in the iOS app; the issue provides no file, test, or entry point. Identify the scenarios that should include either support link, then verify that the resulting messages retain useful backend details and point users to the documented troubleshooting steps.