ds-querier: return QDR instead of k8s error (#95184)

* ds-querier: return QDR instead of k8s error

After parseQuery we know the request is a valid k8s request but we don't
know if the query is valid, therefore this change returns a QDR that
other systems, e.g. alerting ruler, can de-serialize properly.

Co-authored-by: Gábor Farkas <gabor.farkas@gmail.com>

* ds-querier: fix tests

Co-authored-by: Sarah Zinger <sarah.zinger@grafana.com>

* tweak status

* refactor refID to empty

---------

Co-authored-by: Gábor Farkas <gabor.farkas@gmail.com>
Co-authored-by: Sarah Zinger <sarah.zinger@grafana.com>

pkg/registry/apis/query/errors.go

@@ -77,3 +77,20 @@ func makeCyclicError(refID string) error {
 	}
 	return cyclicErr.Build(data)
 }
+
+type ErrorWithRefID struct {
+	err   error
+	refId string
+}
+
+func (ewr ErrorWithRefID) Error() string {
+	return ewr.err.Error()
+}
+
+func NewErrorWithRefID(refId string, err error) error {
+	ewr := ErrorWithRefID{
+		err:   err,
+		refId: refId,
+	}
+	return ewr
+}