Operator reports misleading errors

While testing the use of a valuesFrom of type OCIrepository that was not ready, the sur was reporting following status:

❯ k get sur -A
NAMESPACE             NAME          AGE   READY   STATUS
sylva-units-preview   sylva-units   53s   False   the SylvaUnitsRelease is not yet ready

Whereas sylva-units HelmRelease was not even present in cluster:

❯ k get hr -A
No resources found

This is misleading for operators, we shoud avoid using generic ErrNotYetReady error as we do here, but add a custom message instead.