pkg/registry: Export errNotFound #1940
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The registry logic checks for the unexported error
errNotFoundduring blob handling.When implementing a custom
BlobHandleroutside of this package the developer is unable to use the unexportederrNotFoundvariable, therefore the customBlobHandlercannot signal the correct error to the registry package which results in a wrong execution flow.This PR exposes the
ErrNotFounderror so it can be used from outside the registry package, this aligns with other packages in this module that use the same approach e.g. cache