Auth: use IdentityType from authlib (#91763)

pkg/api/pluginproxy/ds_proxy_test.go

@@ -19,6 +19,7 @@ import (
 	"github.com/stretchr/testify/require"
 	"golang.org/x/oauth2"
 
+	"github.com/grafana/authlib/claims"
 	"github.com/grafana/grafana/pkg/api/datasource"
 	"github.com/grafana/grafana/pkg/apimachinery/identity"
 	"github.com/grafana/grafana/pkg/components/simplejson"
@@ -586,7 +587,7 @@ func TestDataSourceProxy_routeRule(t *testing.T) {
 			&contextmodel.ReqContext{
 				SignedInUser: &user.SignedInUser{
 					Login:        "test_user",
-					FallbackType: identity.TypeUser,
+					FallbackType: claims.TypeUser,
 					UserID:       1,
 				},
 			},